Nucleotide sequences encoding mammalian calcium activated chloride channel-adhesion molecules

ABSTRACT

Nucleotide sequences which encode a mammalian lung endothelial cell adhesion molecule are disclosed. Also disclosed are nucleotide sequences which encode a lung endothelial cell adhesion molecule-associated protein. Recombinant lung endothelial cell adhesion molecule or recombinant lung endothelial cell adhesion molecule-associated protein may be obtained by culturing in a medium a host cell genetically engineered to contain and express a nucleotide sequence according to the present invention, and recovering the recombinant lung endothelial cell adhesion molecule-associated protein or recombinant lung endothelial cell adhesion molecule-associated protein from the culture medium.

[0001] This application is a Divisional of U.S. patent application Ser. No. 09/193,562 filed on Nov. 17, 1998, which claims the priority of U.S. Provisional Application serial no. 60/065,922 filed on Nov. 17, 1997, the disclosures of which are incorporated herein by reference.

[0002] This invention was made with government support under grants CA 47G68 and 09682 from the National Cancer Institute. The government has certain rights in the invention.

FIELD OF THE INVENTION

[0003] The present invention relates to nucleotide sequences encoding a family of mammalian calcium activated chloride channels which may alternatively, or additionally function as adhesion molecules. More particularly, the invention is directed to genes isolated from bovine endothelial cells, human At endothelial cells and murine endothelial cells, which encode calcium activated chloride channel molecules and include the lung-endothelial cell adhesion molecules (Lu-ECAM-1) and associated proteins.

BACKGROUND OF THE INVENTION

[0004] Calcium Activated Chloride Channels

[0005] Ion channels are not only required for normal cellular functions but also play a critical role in numerous diseased states. For example, cystic fibrosis results when ion transport in epithelial cells of individuals is altered due to a genetic defect of the cystic fibrosis transmembrane conductance regulator CFTR; Knowles et al., 1983, J. Clin. Invest.71:1410-1417). Although serious airway pathology is usually the primary cause of mortality in young adults with CF, intestinal epithelial alterations have also been observed. However, the severity of tissue lesions does not correlate with the expression of CFTR in humans or mice, suggesting the involvement of cell-specific channels in addition to CFTR. Further support for the involvement of other channel protein molecules in CF comes from observations that calcium activated chloride secretion is preserved in respiratory epithelia of CF patients compared to unaffected individuals, but is significantly reduced or absent from CFTR-defective epithelia. These results strongly suggest that an alternative non-CFTR regulated chloride channel activity might account for attenuating CF disease in some tissues. Thus, a need exists for identification, isolation and functional analysis of alternative chloride channels.

[0006] Adhesion Molecules

[0007] It is apparent that endothelial cell adhesion molecules may have functions in addition to their adhesive functions. For example, integrins have transmembrane signaling capacities which may play a role in the adherence process. However, the primary function of endothelial cell adhesion molecules is adherence to a substrate such as (a) to promote adherence of endothelial cells to basement membrane, (b) to promote vascular arrest and to facilitate extravasation of leukocytes such as during an immune response, and (c) to promote homing of lymphocytes to a particular lymphoid tissue. Other molecules may play a role in controlling adherence of endothelial cells. For example, chloride ion channels are thought to be involved in a signaling cascade when lymphatic endothelial cells begin to adhere to a substrate (Martin et al., 1996, Microvasc. Res. 52:200-9).

[0008] There is considerable evidence that metastatic nonlymphoid tumor cells mimic leukocytes in recognizing and adhering to one or more endothelial cell adhesion molecules to migrate in blood vessels, to arrest in vascular areas of organs which may provide the microenvironment conducive for metastatic growth, and to extravasate into surrounding tissues. An example of such an endothelial cell adhesion molecule which promotes adhesion of tumor cells and mediates metastasis is lung-endothelial cell adhesion molecule (Lu-ECAIVI-1). Lu-ECAM-1 is a 90 kilodalton (kDa) integral membrane protein constitutively expressed primarily in endothelial cells of pleural and subpleural microvessels. Both in vitro studies and in vivo studies indicate that Lu-ECAM-1-expressing endothelial cells promote adhesion of certain lung-colonizing tumor cells in a manner that is consistent with the expression level of the adhesion molecule and the metastatic propensity of tumor cells. For example, in an in vitro tumor cell/endothelial cell adhesion assay, highly lung metastatic BlG-F10 melanoma cells bind to lung-matrix-modulated endothelial cells expressing Lu-ECAM-1 in significantly larger numbers than their intermediate or low lung-metastatic counterparts (BlG-L8-F1O and B1GFO, respectively; Zhu et al., 1991, Proc. Nati. Acad. Sd. USA 88:9568-720). Such binding appears to be calcium (Ca²⁺) dependent. Further, anti-Lu-ECAM-1 monoclonal antibodies significantly inhibit adhesion of B1GFl0 melanoma cells to Lu-ECAM-1 expressing endothelial cells in culture (Zhu et al., 1991, supra) Anti-Lu-ECAM-1 monoclonal antibodies are also efficient in preventing metastatic colonization of the lungs by highly lung-metastatic B1GF1O cells in a standard animal model for metastasis (Zhu et al., 1991, supra). Lu-ECAM-1, affinity purified from detergent extracts of bovine aortic endothelial cells, was used to immunize mice. The immunized mice showed an inhibition of metastatic colonization of the lungs by B1GFl0 melanoma cells, the efficiency of which was dependent upon the anti-Lu-ECAN-l serum titer (Zhu et al., 1992, J. Clin. Invest. 89:1718-1724). Lu-ECAM-1 appears to be the endothelial cell adhesion molecule for metastatic tumor cells that express the ligand /34 integrin subunit (and possibly other ligands) including, but not limited to, lung-metastatic breast tumor cells, and lung-metastatic melanoma tumor cells.

[0009] Anti-adhesion therapy may be used to interfere with adhesion between organ-specific endothelial cells and blood-borne cancer cells in preventing the formation of metastatic colony formation in organs that support metastatic cell growth. The amount of endothelial cell adhesion molecule that can be made from detergent extracts, as well as the rate of production of the endothelial cell adhesion molecule, is generally insufficient for cost-effective commercial production. More efficient production of proteins, with a concomitant reduction in production cost, can often be achieved by producing a protein through recombinant means. In that regard, in some cases a host cell may be genetically engineered such that an increased amount of the protein is produced and/or the protein is produced in a manner which facilitates its isolation (as compared to harvesting the protein from cell membranes).

SUMMARY OF THE INVENTION

[0010] It is an object of the invention to provide nucleotide sequences, isolated from mammalian endothelial cells, which encode molecules that functions as a calcium activated chloride channel-adhesion molecule (CACC-AM).

[0011] It is also an object of the present invention to provide nucleotide sequences which are variants (including portions) of the gene comprising the CACC-AM, and which encode a polypeptide having substantially the biological activity as compared to the biological activity of the CACC-AM.

[0012] It is an object of the present invention to provide a means for recombinantly producing CACC-AM molecule.

[0013] It is an object of the present invention to provide a means for recombinantly producing proteins associated with CACC-AM molecule.

[0014] It is a further object of the present invention to provide expression vectors containing a nucleotide sequence that encodes a CACC-AM molecule; or containing a nucleotide sequence which is a variant of the gene for CACC-AM, and that encodes a polypeptide having substantial biological activity of a CACC-AM; or containing a nucleotide sequence that encodes a protein associated with a CACC-AM.

[0015] It is an additional object of the present invention to provide recombinant host cells which contain multiple copies of a nucleotide sequence that encodes a CACC-AM molecule, wherein the CACC-AM molecule is recombinantly produced by culturing the recombinant host cells under suitable conditions.

[0016] Other objects, features, and advantages of the present invention will become apparent from the following drawings and detailed description.

BRIEF DESCRIPTION OF THE DRAWINGS

[0017]FIG. 1 is a schematic diagram of a method for identifying clones using polymerase chain reaction. Also shown are restriction enzyme sites EcoRI (“R”) ; NdeI (“N”), PstI (“P”), and BglII (“B”).

[0018]FIG. 2A is a representation of immunoblots of bovine aortic endothelial cell proteins using either monoclonal antibody D3 (“D3”), polyclonal antibody CUll (“11”), polyclonal antibody CU19 (“19”), polyclonal antibody R4 (“R4”), and polyclonal antibody R41 (“R41”).

[0019]FIG. 2B is a representation of Lu-ECAM-1 untreated (“−”)or Lu-ECAM-1 treated with N-glycosidase F (“+”) followed by immunoblot analysis using polyclonal antibody R4; and Lu-ECAM-1-associated proteins untreated (“−”) or Lu-ECAM-1-associated proteins treated with N-glycosidase F (“+”) followed by immunoblot analysis using polyclonal antibody R41.

[0020]FIG. 3A is a representation of bovine aortic endothelial cells either untreated (“−”) or treated with a crosslinker (“+”) followed by immunoblot analysis using either polyclonal antibody R4 (“R4”), or polyclonal antibody R41 (“R41”).

[0021]FIG. 3B is a representation of bovine aortic endothelial cells which were surface-biotinylated in the absence of (“−”) or presence of (“+”) a crosslinker followed by detection with streptavidin-horseradish peroxidase.

[0022]FIG. 4A is a representation of a ethidium bromide stained agarose gel containing the results of reverse transcriptase polymerase chain reaction analysis of bovine aortic endothelial cells (“BAEC”), lung tissue, tracheal epithelium, and spleen tissue using Lu-ECAM-1 specific primer pairs L1, and L2.

[0023]FIG. 4B is a representation of a ethidium bromide stained agarose gel containing the results of reverse transcriptase polymerase chain reaction analysis of bovine aortic endothelial cells (“BAEC”), lung tissue, tracheal epithelium, and spleen tissue using bovine tracheal chloride channel (“Ca-CC”) specific primer pairs T1, and T2.

[0024]FIG. 5 is a bar graph illustrating lung-metastatic tumor cell adhesion to wild type Lu-ECAM-1 in the presence or absence of anti-Lu-ECAM-1 mAb 6D3; and lung-metastatic tumor cell adhesion to recombinant Lu-ECAM-1 in the presence or absence of anti-LuECAM-1 mAb 6D3.

[0025]FIG. 6 is a representation of the expression of mCLCA1 by in vitro translation (A) and in transfected HEK293 cells (B)

[0026]FIG. 7 is a representation of the biochemical analysis of hCLCA1 protein for in vitro translated (a), c-myc tagged hCLCA1 transfected HEK293 (b), and surface expression of c-myc tagged hCLCA1.

[0027]FIG. 8 is a representation of biochemical analysis of the hCLCA2 protein for in vitro translation (a) and immunoblot detection of myc tagged hCLCA2 constructs in HEK293 cells (b)

[0028]FIG. 9 is a representation of whole cell currents in mCLCA1 transfected HEK293 cells.

[0029]FIG. 10 is an illustration of the summary the effects of inhibitors on mCLCAl current expression.

[0030]FIG. 11 is a representation of whole cell currents in hCLCA1-transfected HEK293 cells.

[0031]FIG. 12 is an illustration of the summary the effects of inhibitors on hCLCA1 current expression.

[0032]FIG. 13 is an illustration of the electrohpysiological analysis of hCLCA2.

[0033]FIG. 14 is a representation of a comparison of the amino acid sequences of the calcium activated chloride channels, hCLCA1 (SEQ ID NO:27); hCLCA2 (SEQ ID NO:31); bCLCA1 (SEQ ID NO:46); Lu-ECAM-1 (SEQ ID NO:1); and mCLCA1 (SEQ ID NO:33).

DETAILED DESCRIPTION

[0034] Definitions “Precursor” is a term used in conjunction with “lung-endothelial cell adhesion molecule” hereinafter for the purposes of the specification and claims to refer to a sequence of amino acids bound to and located upstream from the N-terminal portion of the mature form of a lung-endothelial cell adhesion molecule, wherein the removal of this sequence results in the formation of the “mature form” of the lung-endothelial cell adhesion molecule. A precursor protein is a form of a lung-endothelial cell containing a prepro-region. The prepro-region is made up of amino acids comprising a signal sequence, wherein the signal sequence is cleaved to form the mature form of a lung-endothelial cell adhesion molecule.

[0035] “Calcium activated chloride channel—adhesion molecule” or “CACC-AM” is a term used hereinafter for the purposes of the specification and claims to mean a molecule isolated from mammalian endothelial cells that when expressed in cells induces the expression of calcium activated chloride conductance channels.

[0036] “Calcium activated chloride channel (s)” is a term used for the purposes of the specification and claims to mean chloride channels whose conductance is activated by calcium as judged by inhibition of conductance by DIDS, DTT or niflumic acid.

[0037] “Recombinant calcium activated chloride channel-adhesion molecule” or “Recombinant CACC-AM” is a term used hereinafter for the purposes of the specification and claims to refer to a CACC-AM molecule produced from a heterologous cell (e.g., other than from vascular endothelial cells), wherein the heterologous cell has been genetically engineered to contain a nucleotide sequence that encodes a CACC-AM molecule.

[0038] “Recombinant calcium activated chloride channel-adhesion molecule-associated protein” or “recombinant CACC-AM-associated molecule” is a term used hereinafter for the purposes of the specification and claims to refer to a CACC-AM associated protein produced from a heterologous cell (e.g., other than from vascular endothelial cells) wherein the heterologous cell has been genetically engineered to contain a nucleotide sequence that encodes a CACC-AM associated molecule. “Lung-endothelial cell adhesion molecule-associated protein” is a term used hereinafter for the purposes of the specification and claims to refer to a protein which (a) is smaller in kilodaltons than the mature form of the lung-endothelial cell adhesion molecule, as determined by, for example, sodium dodecyl polyacrylamide gel electrophoresis (SDS-PAGE) or amino acid analysis; (b) is encoded by messages that also encode the lung-endothelial cell adhesion molecule; (c) is antigenically distinct from the lung-endothelial cell adhesion molecule; and (d) is extracellularly associated in a complex (e.g, specific binding) with the lung-endothelial cell adhesion molecule.

[0039] By the term “operably linked” is meant, for the purposes of the specification and claims to refer to the chemical fusion (restriction with subsequent ligation) or synthesis of heterologous DNA with a nucleotide sequence that encodes a lung-endothelial cell adhesion molecule or a lung-endothelial cell adhesion molecule-associated protein such that the resultant recombinant DNA molecule is formed in a proper orientation and reading frame for the nucleotide sequence to be transcribed into functional RNA. In the construction of the recombinant DNA molecule, it is generally preferred to position a promoter at a distance upstream from the initial codon of the nucleotide sequence that is approximately the same as the distance in its natural setting (e.g., in an endothelial cell). However, as known in the art, some variation in the distance can be accommodated without loss of promoter function. Likewise, it is generally preferred to position an enhancer element at a distance upstream from the promoter, or incorporated into the promoter sequences as a promoter element, or located between the promoter and the DNA molecule to be expressed. However, as known in the art, some variation in the placement can be accommodated without loss of the enhancer element's function. “Expression control sequences” is meant, for the purposes of the specification and claims to refer to a promoter or promoter-enhancer combination.

[0040] By the term “expression vector” is meant, for the purposes of the specification and claims to refer to a DNA molecule which is operably linked to a nucleotide sequence that encodes one or more recombinant proteins comprising a lung-endothelial cell adhesion molecule and/or a lung-endothelial cell adhesion molecule-associated protein such that the production of the recombinant protein is effected in a suitable host. The vector may include, but is not limited to, a plasmid, phage, or a potential genomic insert.

[0041] By the terms “degeneracy substitutions”, for the purposes of the specification and claims to refer to the base pair changes (substitutions) in the nucleotide sequence such as a change in one or more bases of a triplet codon (e.g., third base degeneracy) resulting in the encoding of the same amino acid as before the change, or a change resulting in the encoding of a conservative substitution in the amino acid sequence encoded. With respect to such variations, and as appreciated by those skilled in the art, because of third base degeneracy, almost every amino acid can be represented by more than one triplet codon in a coding nucleotide sequence. Thus, in nature or by mutagenic means, the nucleotide sequence be modified slightly in sequence (e.g., substitution of a nucleotide in a triplet codon), and yet still encode its respective gene product of the same amino acid sequence as encoded by the disclosed nucleotide sequences.

[0042] Further, the nucleotide sequence may have minor base pair changes which may result in variation (conservative substitution) in the amino acid sequence encoded. Such conservative substitutions are not expected to substantially alter the biological activity of the gene product. A “conservative substitution” for the purpose of the specification and claims means modification of one or more amino acids are such that the tertiary configuration of the recombinant protein is substantially unchanged. Conservative substitutions is defined by aforementioned function, and includes substitutions of amino acids having substantially the same charge, size, hydrophilicity, and/or aromaticity as the amino acid replaced. Such substitutions, known to those of ordinary skill in the art, include glycine-alanine-valine; isoleucine-leucine; tryptophan-tyrosine; aspartic acid-glutamic acid; arginine-lysine; asparagine-glutamine; and serine-threonine. It is noted that a nucleotide sequence according to the present invention encodes a mammalian Lu-ECAM-1 as to be described more fully herein, and does not encompass the nucleotide sequence encoding the bovine tracheal epithelial chloride channel described recently (Cunningham et al., 1995, J. Biol. Chem. 270:31016-26).

[0043] By the terms “% identity of amino acid sequence” are meant, for the purposes of the specification and claims to refer to the percent of amino acid positions that are identical between two amino acid sequences as determined by sequence comparisons performed using algorithms known to those skilled in the art.

[0044] By the terms “% identity of nucleotide sequence” are meant, for the purposes of the specification and claims to refer to the percent of nucleotide base pair positions that are identical between two nucleotide sequences as determined by sequence comparisons performed using algorithms known to those skilled in the art.

[0045] By the term “substantially” is used in conjunction with the biological activity (e.g., adhesive function or chloride ion channel function) to mean, for the purposes of the specification and claims, to refer to retaining a degree of the biological activity ranging from approximately 50% of the activity to greater than 100% of the activity, in relation to the molecule with which it is compared.

[0046] By the term “unexpectedly improved” is used in conjunction with the biological activity (e.g., adhesive function or chloride ion channel function) of a recombinant protein to mean, for the purposes of the specification and claims, to refer to a degree of the biological activity which is approximately greater or equal to 30% more biological activity than that of the molecule to which it is compared, and which improvement in activity was unforeseen for this recombinant protein.

[0047] The present invention relates to nucleotide sequences and variants thereof that encode a polypeptide which is a calcium activated chloride channel and/or has adhesion properties. In accordance with this invention, nucleotide sequences encoding Lu-ECAM-1/mouse calcium activated chloride channel (mCLCA), and human calcium activated chloride channel molecules (hCLCA1, hCLCA2, and hCLCA3) are disclosed. The nucleotide sequences have been derived from bovine aortic endothelial cells, from murine aortic endothelial cells, or from human endothelial cells. In one embodiment, a nucleotide sequence of the present invention, SEQ ID NO:1, contains sequences that encode either Lu-ECAM-1 or Lu-ECAM-1-associated protein. From SEQ ID NO:1, the lung-endothelial cell adhesion molecule precursor is deduced to be approximately 905 amino acids (SEQ ID NO:2). Cleavage of the signal peptide (amino acids −21 to −1 of SEQ ID NO:2) from the lung-endothelial cell adhesion molecule precursor, and subsequent post-translational processing, results in a Lu-ECAM-1 of about 799 amino acids (amino acid 1 to amino acid 799 of SEQ ID NO:2) and with a predicted molecular size of approximately 87 kDa. It was also discovered during the development of the invention that a SEQ ID NO:1 encodes a Lu-ECAM-1-associated protein (SEQ ID NO:3) which, depending on the glycosylation pattern, has an apparent molecular size (e.g., as determined by SDS-PAGE) ranging from about 22 kDa (little or no glycosylation present) to 38 kDa. More particularly, SEQ ID NO:1 encodes Lu-ECAM-1-associated proteins of apparent molecular size of about 38 kDa and of about 32 kDa. Further, these two LU-ECAM-1-associated proteins bind with Lu-ECAM-1 (amino acid 1 to amino acid 799 of SEQ ID NO:2)in forming Lu-ECAM-1 complex. The mCLCA, human CLCA1, and human CLCA2 were then cloned and sequenced using the Lu-ECAM-1 open reading frame as a probe.

[0048] In accordance with another embodiment of this invention, using recombinant techniques a nucleic acid molecule containing the nucleotide sequence encoding calcium activated chloride channel-adhesion molecule is incorporated into an expression vector. The recombinant vector is introduced into an appropriate host cell thereby directing the expression of the sequence in that particular host cell. The expression system, comprising the recombinant vector introduced into the host cell, can be used to produce recombinant CACC-AM, or associated proteins. According to the present invention, recombinant CACC-AM, a recombinant polypeptide having CACC-AM activity, and/or recombinant CACC-AM associated protein, can be purified by methods known in the art including ion-exchange chromatography, affinity chromatography, or other chromatographic separation techniques.

[0049] Another embodiment of the present invention is a method for providing calcium-activated chloride conductance channels to mammalian cells. In mammalian cells in which the membrane chloride ion channels are deficient in number or function (e.g., in airway epithelial cells of cystic fibrosis patients), a method of providing to mammalian cells a calcium-activated chloride conductance channel, comprising CACC-AM or a polypeptide having CACC-AM activity, comprises administering directly to the cells an expression vector. The expression vector contains a nucleic acid molecule operably linked to expression control sequences, wherein the nucleic acid molecule encodes a CACC-AM, with the resultant expression vector being introduced into the mammalian cell, and the calcium-dependent chloride conductance produced in the mammalian cells containing the expression vector.

[0050] The bovine Lu-ECAM-1 complex appears to be expressed in lung, spleen, and aortic epithelial cells. The murine Lu-ECAM-1 complex appears to be expressed in lung, trachea, spleen, mammary gland, intestine, uterus, epididymis, testis, pancreas, kidney, liver and skin. A first human CLCA1 (hCLCA1) molecule (SEQ ID NO:28) appears to be expressed in small intestine, and colon mucosa. A second human CLCA2 (hCLCA2) molecule (SEQ ID NO:32) appears to be expressed in trachea and mammary gland. A third human CLCA3 (hCLCA3) molecule (SEQ ID NO:30) appears to be expressed in small intestine, trachea, mammary gland, stomach, bone marrow, spleen, lymph node, and peripheral blood leukocytes. That these various mammalian proteins appear to be expressed in tissues which are affected in cystic fibrosis may allow them to be used as chloride channels in accordance with Example 8 herein.

[0051] For purposes of the description, the following embodiments illustrate the manner and process of making and using the invention and set forth the best mode contemplated by the inventor for carrying out the invention, but are not to be construed as limiting.

EXAMPLE 1

[0052] This embodiment illustrates the molecular cloning of calcium activated chloride channel-adhesion molecules. Lu-ECAM-1. A nucleic acid molecule encoding Lu-ECAM-1 and Lu-ECAM-1-associated proteins according to the present invention can be obtained by preparing cDNA from total RNA isolated from a host cell expressing Lu-ECAM-1. To illustrate this example, total RNA was isolated from bovine aortic endothelial cells by the guanidinium chloride procedure, and a Lu-ECAM-1 CDNA clone was constructed using nucleic acid amplification as summarized in FIG. 1. First, the N-terminal and internal amino acid sequences of a 38 kDa Lu-ECAM-1-associated protein (SEQ ID NO:3) were used to design degenerate primers for primary and nested polymerase chain reactions using the reverse-transcribed total RNA as template. Upstream primers corresponded to nucleotide sequences encoding amino acids 685 to 693, and amino acids 698 to 705, of SEQ ID NO:3. Downstream antisense primers corresponded to nucleotide sequences encoding amino acids 839 to 832, and amino acids 852 to 846, of SEQ ID NO:3. A product of approximately 450 bp was amplified (illustrated in FIG. 1 as “P1”). From these sequences, nondegenerate primers (SEQ ID NOs: 4 and 5) were designed, and the resultant amplification for 3′ sequences resulted in a product of approximately 750 bp (FIG. 1, “P2”). Nondegenerate primers (SEQ ID NOs: 6 and 7) were designed, and the resultant amplification for 5′ sequences resulted in a product of approximately 1000 bp (FIG. 1, “P3”). To obtain the remaining 5′ sequences (FIG. 1, “24”) including a signal sequence and the ATG initiation codon, used was an internal primer (SEQ ID NO:8). To reconstitute the CDNA sequence from the amplified products (Pi-P4), the overlapping products were assembled into one open reading frame by an over-lap extension strategy using a high fidelity polymerase combination. The result was clone 1 (FIG. 1) comprising 3.3 kb and encoding the amino acid sequence of SEQ ID NO:2. Hydrophilicity analysis revealed six significant generally nonpolar regions. In particular, a hydrophobic sequence from amino acid 595 to amino acid 618 appears to be a transmembrane domain. Nine potential sites exist for asparagine-linked glycosylation.

[0053] Using the primers to probe a lambda cDNA library, three additional clones (clones 2, 3, and 4; FIG. 1) were identified and sequenced. Additional primers (SEQ ID NOs: 9 and 10) were used to obtain the 5′ end sequences. Clone 2, a 3.3 kb variant of clone 1, was identical to clone 1 from nucleotide 252 to nucleotide 2438 of SEQ ID NO:1, but then the sequence diverged. The amino acid sequence deduced from clone 2 (SEQ ID NO:11) was identical to that of clone 1 up to amino acid 772 (of SEQ ID NO:2) followed by a glutamate and serine. Clone 3 was 2.8 kb variant of clone 1. The amino acid sequence deduced from clone 3 (SEQ ID NO:12) was identical to that of clone 1 up to amino acid 772 (of SEQ ID NO:2), followed by an additional 28 amino acids. Clone 4, of 1.3 kb, appears to encode a truncated 321 amino acid (SEQ ID NO:13) variant of Lu-ECAM-1 that may be secreted, and is identical in sequence to amino acids 1 to 303 of SEQ ID NO:2, followed by 18 divergent amino acids. An oligonucleotide probe (SEQ ID NO:14) synthesized from the unique 3′ region of clone 1 was used to hybridize MRNA isolated from bovine aortic endothelial cells. The probe detected high molecular weight bands (6-10 kb) in Northern blot analysis as well as the 3.3 kb band. However, the probe did not hybridize to the 2.8 and 1.3 kb bands. These results indicate that the 38 kDa and 32 kDa proteins appear to be encoded only by the messages that also encode the 90 kDa protein.

[0054] This embodiment also illustrates that CACC-AM is conserved in mammalian species, and thus may serve the same or similar functions in mammalian species other than the ones disclosed herein. Conservation of the gene encoding CACC-AM was determined by multispecies genomic DNA (from human, green monkey, rat, mouse, dog, bovine, rabbit, chicken, and budding yeast) blot with probes derived from various regions of the bovine cDNA sequence for Lu-ECAM-1. These probes hybridized to all mammalian species genomic DNA, although the hybridization to rat DNA was comparatively weak. No hybridization signal was detected for chicken DNA or yeast DNA. These results indicate that the gene(or variant sequence thereof) encoding Lu-ECAM-1 is highly conserved in mammalian evolution.

[0055] Accordingly, using similar methods and primer sequences for isolating and sequencing of a nucleotide sequence encoding a bovine Lu-ECAM-1, various nucleotide sequences encoding other CACC-AMs maybe identified.

[0056] Mouse Calcium Activated Chloride Channel

[0057] As an illustration, a murine CACC/AM has been identified. A mouse lung cDNA library in lambda-gtll was screened with the open reading frame of Lu-ECAM-1 cDNA (EcoRl-BglII 2.4 kb fragment of the Lu-ECAM-1 cDNA) using low stringency hybridization conditions (hybridization at 65 C. in 5×SSC, 5×Denhardt's solution and 0.2% SDS solution overnight with agitation; washing with 2×SSC followed by several washes in 0.2×SSC, 0.2% SDS at room temperature for a total of 30 minutes). Positive phages were purified and analyzed by Southern blot hybridization techniques. Standard sequencing techniques (eg. automatic sequencing techniques) were used to determine the sequence of the clones. The largest of the isolated CDNA was 2.2 kb in length. It lacked the 5′ end as determined by sequence comparison with the known bovine homolog. A full length mouse Lu-ECAM-1 was constructed by amplification of the 5′ cDNA ends from a pool of mouse lung poly(A)+RNA (CLONTECH). A gene-specific primer (SEQ ID NO:35) was used to reverse transcribe the cDNA from mouse lung mRNA. A nested primer (SEQ ID NO:36) and a primer recognizing the 5′ terminal tag were used to amplify the 5′ end of the cDNA by polymerase chain reaction. PCR products were cloned into an expression vector(pGEM-3; Promega). A full length mouse mCLCAl was assembled by fusing the rapid amplification product clone with the 2.2 cDNA insert in an expression vector (pmlI site of pBluescript, Stratagene). Thus a 3.02 kb long sequence (SEQ ID NO:33) encoding a polypeptide of 902 amino acids (SEQ ID NO:34) was obtained.

[0058] Human CLCA1

[0059] In another illustration, a nucleic acid molecule encoding human calcium sensitive chloride channels was obtained from either the genomic library or a cDNA library. A human genomic library was screened with the ORE of bovine Lu-ECAM-1 as probe using standard plaque hybridization techniques. Three positive clones of 4, 6, and 7 kb were isolated and sequenced, spanning a contiguous genomic fragment of 14 kb with interspersed segments of 58 to 65% nucleotide identity to parts of the Lu-ECAM-1 ORE. Since the regions of homology did not encode a contiguous open reading frame and did not cover the entire Lu-ECAM-1 ORF the remaining parts of the gene were obtained by genomic walking using nested PCR primers from each 5′ and 3′ end of the clones obtained by plaque hybridizations. Nested PCR conditions were 20 cycles for the first amplification step and 30 cycles for the second amplification with annealing temperatures of approximately 2° below the calculated melting point of the primers and extension times of 5 mm per cycle. PCR products were cloned into a vector (pGem-T, Promega) and sequenced. The full length gene was isolated and sequenced spanning 31,902 bp. The reading frame of the genomic sequence was determined according to its sequence homology with bCLCA1, Lu-ECAM-1 and mCLCAl.

[0060] Using an RT-PCR based strategy, the CLCA1 cDNA was cloned and sequenced from small intestinal mRiNA. PCR primers (downstream primer SEQ ID NO:37, and upstream primer SEQ ID NO:38) flanking the ORE and containing linkers with NotI restriction sites were generated and used to amplify the 2745 bp ORF. RT-PCR was performed with 500 ng of human small intestinal poly(A+) (CLONTECH). Reverse transcription was carried out at 48° C. with Superscript RNase H-reverse transcriptase and PCR was performed with Pwo DNA polymerase (Boehringer). PCR conditions were as follows: initial denaturation at 94° C. for 3 min followed by addition of DNA polymerase; 35 cycles of 94° C. for 50 s, 58° C. for 30 s, and 72° C. for 2 min with a time increment of 3 s per cycle for each extension step, followed by a final extension step of 72° C. for 8 min. Foe obtaining the untranslated region of CLCA1 mRNA, amplification of the 5′ and 3′ ends was carried out using primers SEQ ID NO:39 and SEQ ID NO:40 respectively. The resulting cDNA sequence (SEQ ID NO:27) comprises 3007 bp and is identical to the genomic fragments with high sequence similarity to the previously cloned homolog. It contains a single ORF of 2745 bp encoding a polypeptide of 914 amino acids (SEQ ID NO:28).

[0061] hCLCA2 cDNA

[0062] A human lung cDNA library (Clontech) was screened using Lu-ECAM-1 cDNA as probe as described above. Missing 5′ and 3′ ends of the isolated cDNA species were completed using RACE (Life Technologies). A single 3.6 kb cDNA species was identified and termed CLCA2. A sequence of 2970 bp is shown in SEQ ID NO: 31. The open reading frame of The nucleotide sequence encoding a polypeptide of 943 amino acids (SEQ ID NO:32) shared high degrees of identity with those of Lu-ECAM-1 (86%), bCLCA1 (85%), mCLCAl (76%), and hCLCAI (63%)—FIG. 14.

[0063] hCLCA3 cDNA

[0064] A human spleen cDNA library packed in phage λgtll (Clontech)was screened using standard plaque hybridization protocols. The open reading frame (ORF) of the Lu-ECAM-1 cDNA was used as probe as described above. Phage colony blots were hybridized and washed at low stringency conditions (hybridization: 55° C. overnight in 4×SSC standard hybridization buffer without formamide; two stringency washes with 2×SSC, 0.1% SDS at room temperature, and two washes with 1×SSC, 0.1% SDS at 40° C.). After exhaustive screening of the library (>7×10⁶ plaques), a single positive phage clone was plaque-purified, amplified, and subjected to DNA purification (Wizard Lambda Preps, Promega). The insert was cut out using the EcoRI sites and cloned into pBluescript II SK (Stratagene). Automated sequencing with initial plasmid-derived primers followed by internal gene-specific primers was performed by the Cornell University DNA Sequencing Facility using dRhodamine Terminator Cycle Sequencing on an ABI Prism 377 DNA Sequencer (PE Applied Biosystems). Missing 5′ and 3′ ends of the CDNA were isolated using the rapid amplification of CDNA ends (RACE) technique (Life Technologies) and human spleen poly-A+RNA (Clontech) as template. The primers for amplification of 5′ end were SEQ ID NO:43 and SEQ ID NO:44, and the primers for 3′ end was SEQ ID NO:45. The resulting CDNA sequence of 3599 base paris (deposited in GenBank under accession no. AF043976) was obtained. A sequence of 3418 bp is shown in SEQ ID NO:29, which encodes for a polypeptide of 1000 amino acids (SEQ ID NO:30).

EXAMPLE 2

[0065] This example illustrates the proteins encoded by the cDNAs isolated in Example 1 and the relationship between CACC-AM and associated proteins. As an illustration, the relationship is between Lu-ECAM-1 and Lu-ECAM-1 associated protein is demonstrated. Antigenic characterization was performed by generating anti-Lu-ECAM-1 antibodies, and testing the antibodies in Western blot analyses of bovine aortic endothelial cell extracts. Rats were immunized with either the 90 kDa band excised from a polyacrylamide gel and mixed with adjuvant, resulting in polyclonal antibody R4; or a 38 kDa band excised from a polyacrylamide gel and mixed with adjuvant, resulting in polyclonal antibody R41. Two peptides (SEQ ID NOs: 15 and 16) were synthesized, conjugated to KLH, and used to immunize rabbits in forming polyclonal antibodies CUll and CU8, respectively. Monoclonal antibody 6D3 has binding specificity to Lu-ECAM-1 as described previously (Zhu et al., 1992, supra).

[0066] As shown in FIG. 2A, mAb 6D3 detected a 90 kDa component (Lu-ECAM-1) and two larger bands of approximately 120 kDa and 130 kDa (Lu-ECAM-1 precursors); but not the 38 kDa or the 32 kDa components (Lu-ECAM-1-associated proteins). Likewise, polyclonal antibody (against amino acid residues of SEQ ID NO:15) recognized only the 90 kDa, 120 kDa, and 130 kDa components (FIG. 2A). In contrast, polyclonal antibody CU19 (against amino acid residues 618 to 767 of SEQ ID NO:2) strongly detected the 38 kDa and 32 kDa components, and the 120 kDa and 130 kDa components, but only weakly detected the 90 kDa component. These results are evidence that the initial translation products of the open reading frame in SEQ ID NO:1 are the 120 kDa and 130 kDa components, which are then processed to yield the 90 kDa, 38 kDa, and 32 kDa components.

[0067] These results were confirmed with polyclonal antibodies R4 and R41. R4, a polyclonal anti-90 kDa protein antibody, detected the 90 kDa band, as well as the 120 kDa and 130 kDa components; but not the 38 kDa, and 32 kDa components (FIG. 2A). R41, a polyclonal anti-38 kDa protein antibody, detected the 38 kDa and 32 kDa bands, as well as the 120 kDa and 130 kDa components; but not the 90 kDa component (FIG. 2A). These results indicate that (a) the 38 kDa and 32 kDa bands are antigenically related; (b) the 120 kDa and 130 kDa bands are antigenically related; and (c) the 120 kDa and 130 kDa bands have sequence in common with both the 90 kDa protein, and the 38 kDa and 32 kDa proteins. Treatment of Lu-ECAM-1 complex with Nglycosidase F reduced the 38 kDa and 32 kDa components to a common band of about 22 kDa, indicating the these two proteins represent alternate glycoforms (FIG. 23). N-glycosidase F treatment reduced the 90 kDa protein to 77 kDa (FIG. 23). The 77 kDa and 22 kDa products would add up to the exact size of the initial translation product of clone 1 before processing.

[0068] As shown in FIG. 2A, the 38 kpa and the 32 kDa components of the Lu-ECAM-1 complex are not recognized by mAb 6D3 in SDS-PAGE and Western blot analysis, suggesting that these components are likely noncovalently complexed with the 90 kDa protein. The Lu-ECAM-1 complex is resistant to dissociation by high salt, detergent, and EDTA, but readily dissociates when boiled in SDS in the presence or absence of reducing agents (e.g., dithiothrietol). To visualize the Lu-ECAM-1 complex, and to determine whether the proteins of the complex are associated intracellulary or extracellularly, the surface of bovine aortic endothelial cells was cross-linked. Confluent bovine aortic endothelial cells were surface biotinylated in the presence or absence of disuccinimidyl tartarate (DST), a reagent that restricts cross-linking to extracellular moieties of proteins in close contact. DST dissolved in dimethyl sulf oxide was added to the cells in a final concentration of 1 mM. Cross-linking was carried out at 4° C. with gentle shaking. The reactions were stopped by adding glycine to a final concentration of 50 mM. After quenching for 5 minutes, the cells were lysed for 1 hour in lysis buffer. Lysates were clarified by centrifugation, precipitated with mouse-IgG agarose beads, then immunoprecipitated with mAb 6D3. Immunoprecipitated proteins were analyzed by SDS-PAGE, transferred to nitrocellulose, and detected using avidin-horseradish peroxidase and chemiluminescence. As shown in FIG. 3A, immunoblots using either R4 (polyclonal anti-90 kDa protein antibody) or R41 (polyclonal anti-38 kDa protein antibody) detected a novel band migrating at approximately 140 kDa (arrow, FIG. 3A), with a concomitant reduction in intensities of the 90 kDa, 38 kDa, and 32 kDa components. As illustrated in FIG. 32, all Lu-ECAM-1 complex components were biotinylated on bovine aortic endothelial cell surface. These results suggest that the Lu-ECAM complex is made up of either the 90 kDa and 38 kDa proteins complexed in an extracellular association, and/or the 90 kDa and 32 kDa proteins complexed in an extracellular association.

[0069] In another illustration of this embodiment, the mCLCAl protein was characterized. An in vitro transcription and translation system (TNT™, Promega) was used for the in vitro expression of the full length cDNA (SEQ ID NO:33). Canine microsomes were used to glycosylate the product of in vitro translation. In addition, HEK293 cells were transfected with the cDNA of mCLCA1 using standard methods known to those skilled in the art (CaPO₄ or Lipfectamine, Life Technologies). Products were analyzed on SDS-PAGE gels. In addition, mCLCA1 cDNA was also used for transfection of cells. Proteins prepared by standard in vitro translation techniques or from lysates of transfected HEK293 cells were analyzed on Western blotting by using rabbit polyclonal antibodies against N-terminal (CU8) and the C-terminal region (CU2l) of Lu-ECAM peptide. As shown in FIG. 6, protein bands of 130, 125, 90 kDa and triplet bands of 32-38 kDa were detected in transfected cells. CU8 reacted exclusively with the large sized bands of 90, 125 and 130 kDa whereas CU21 reacted with only the triplet of the smaller bands. This recognition pattern is similar to that observed for Lu-ECAM-1 and suggests that the ORF of mCLCA1 cDNA encodes a precursor protein, represented by alternate glycoforms of 125 and 130 kDa, that is posttranslationally processed into 90 kDa and 38/32 kDa components.

[0070] In another illustration of this embodiment, the hCLCA1 protein was characterized. The ORF of the hCLCA1 cDNA encodes a 914 amino acid protein with a calculated molecular weight of 100.9 kDA. In vitro translation of human CLCA1 cDNA yielded a single protein of approximately 100 kDa, consistent with its calculated size (FIG. 7). In the presence of canine microsomes the Mr of the polypeptide shifted to 125,000 indicating multiple glycosylations. Similar to Lu-ECAM-1 and mCLCA1, 37-40 kDa proteins were not detected in immunoblots of whole cell lysates but were coimmunoprecipitated with the 90 and 125 kDa protein. To ascertain whether the 125 kDa hCLCA1 protein is processed into 90 kDa and 30-40 kDa cleavage products in a manner similar to Lu-ECAM-1, c-myc tags were inserted in five different hydrophilic sites with high surface probability (m1-m5) and were overexpressed in HEK293 cells (Cravchik et al., 1993, Gene 137:139-143). Immonoblots of whole cell lysates probed with anti-myc antibodies revealed proteins of 125 and 90 kDa (FIG. 7b). However, immunoprecipitation of cell lysates following surface biotinylation indicated the presence of 37-41 kDa proteins similar to Lu-ECAM-1 and mCLCAl (FIG. 7c).

[0071] In another illustration of this embodiment, the human CLCA2protein was analyzed. The predicted size of the full length protein (104 kDa) is consistent with the result of an in vitro translation assay yielding primary translation product of approximately 105 kDa (FIG. 8a) To ascertain whether the CLCA2 protein is cleaved into two subunits in mammalian cells as reported for other CLCAs, two constructs were generated with a c-myc tag within the amino or carboxy terminus respectively as described by Cravchik et al., 1993, Gene 137:139-143) and transfected into HEK293 cells. Immunoblots of cell lysates probed with anti-myc antibody identified an 86 kDa protein when the tag was inserted near the amino terminus (m1) and a 34 kDa protein when the tag was inserted near the amino terminus (m2)-FIG. 8b.

EXAMPLE 3

[0072] Tissue Distribution

[0073] This example illustrates the tissue distribution of CACC-AM. As an illustration, the distribution of Lu-ECAM-1/Lu-ECAM-1 complex in the respiratory tree, as demonstrated by immunohistochemistry. Tissue sections were probed with anti-Lu-ECAM-1 antibodies. Formalin-fixed sections of bovine trachea were first denatured by boiling for ten minutes in 4M urea in a microwave oven, then probed with polyclonal antibody R4 (raised against denatured Lu-ECAM-1). The sections were then incubated with donkey anti-rat IgG and avidin-peroxidase conjugate. The peroxidase conjugate was detected using diamino-benzidine as substrate, and then the slides were counterstained with hematoxylin. Lung sections were prepared and probed with mAb 6D3 as previously described (Zhu et al., 1993, mt. J. Cancer 53:68-633) except that a biotinylated secondary antibody was used, followed by the avidin-peroxidase conjugate, diamino-benzidine as substrate, and counterstaining with hematoxylin. The immunohistochemical analyses revealed that Lu-ECAM-1/Lu-ECAM-1 complex was expressed predominantly in endothelia of small to medium-size venules of the lung, and in the respiratory epithelia of bronchi and trachea. To confirm the distribution of expression of Lu-ECAM-1/Lu-ECAM-1 complex, and to distinguish it from that of the bovine epithelial chloride channel (“Ca-CC”) described recently (Cunningham et al., 1995, supra), nucleic acid amplification was performed using specific primers as described herein in Example 4.

[0074] Tissue distribution for other CACC-AMs of the present invention were determined by Northern blot analysis and RT-PCR. Human multiple tissue Northern blots (Clontech) contained 2 μg poly-A+RNA per lane of the following tissues: heart, brain, placenta, lung, liver, skeletal muscle, kidney, pancreas, spleen, thymus, prostate, testis, ovary, small intestine, colon mucosa, peripheral blood leukocytes, stomach, thyroid, spinal cord, lymph node, trachea, adrenal gland, and bone marrow. Blots were hybridized labeled fragments for respective cDNAs. To exclude cross hybridization of related family members, highly stringent washing conditions were employed following the hybridization (two washes with 2×SSC, 0.1% SDS at 65° C. for 30 min, followed by two washes with 0.2×SSC, 0.1% SDS at 65° C. for 30 min). RT-PCR was performed using the above-mentioned conditions and primers to detect the cDNA fragments in poly-A+RNA samples from human tissues. PCR products were analyzed on an ethidium bromide stained agarose gel. To exclude amplification of a closely related family member, the PCR products were cut out of the gel, cloned into the pGem-T vector, and partially sequenced. In all RT-PCR assays, negative controls were included with water instead of RNA as template in the reverse transcription. To control for RNA quality as well as reverse transcription and PCR conditions, a fragment of EF-la mRNA was amplified as described.

[0075] A mouse multiple tissue Northern blot when probed with HindIII fragment of mCLCAl ORF revealed the presence of a 3.1 kb transcript in brain and spleen and transcripts of 5 kb and 3.1 kb in heart, lung, liver, and kidney.

[0076] For human CLCA1, a single mRNA species of 3.3 kb was detected in Northern blot hybridizations in small intestine and colon mucosa. Similar results were obtained with RT-PCR.

[0077] hCLCA2 mRNA was detected in trachea and mammary gland using the 2832 ORF of hCLCA1. While CLCA2 was not detected in the lung by Northern blot hybridization, the more sensitive RT-PCR revealed its expression in lung in addition to trachea and mammary gland suggesting a significantly lower expression level in the lung.

[0078] No signals were detected in any of the tissues tested on Northern blots using the 2817 cDNA of hCLCA3. However, by RT-PCR a fragment of the hCLCA3 cDNA could be amplified form all tissues tested, i.e. spleen, lung, trachea, thymus and mammary gland.

EXAMPLE 4

[0079] This example demonstrates that Lu-ECAM-1 and the bovine epithelial chloride channel (“Ca-CC”) described recently by (Cunningham et al., 1995, J. Biol. Chem. 270:31016-31026) aredistinct molecules.

[0080] 1. Genetic Similarity

[0081] Sequence alignment of the open reading frame of SEQ ID NO:1 with the CA-CC cDNA shows that the nucleotide sequences share 92% identity at the DNA level. Comparing the deduced amino acid sequence of Lu-ECAM-1 (SEQ ID NO:2) with that of CA-CC shows 88% identity at the amino acid level. However, the differences appear randomly distributed, and thus, Lu-ECAM-1 and CA-CC appear to represent products of different genes.

[0082] 2. Subunit Differences

[0083] As shown in FIGS. 2A, 2B, 3A, and 3B, it is clear that the precursor Lu-ECAM-1 is a protein with an apparent molecular size of either 120 kDa or 130 kDa. The precursor Lu-ECAM-1 gets processed to a 90 kDa Lu-ECAM-1 protein, and to either a 38 kDa or 32 kDa Lu-ECAM-1-associated protein. In contrast, CA-CC is a 140 kDa multimeric complex that can be reduced to a band comprised of 38 kDa subunits in the presence of a reducing agent (Cunningham et al., 1995, supra). This difference in subunit structure is further evidence that Lu-ECAM-1/Lu-ECAM-1 complex is a glycoprotein distinct from CA-CC.

[0084] 3. Molecular Expression Differences

[0085] It is possible that immunohistochemical staining with polyclonal antibody to Lu-ECAM-1 could detect CA-CC if CA-CC shared a cross-reactive epitope with Lu-ECAM-1. To distinguish Lu-ECAM-1 expression from CA-CC expression in tissues, reverse transcriptase polymerase chain reaction was performed. Messenger RNA (500 ng) from bovine lung tissue, from bovine spleen tissue, from bovine tracheal epithelium, and from cultured bovine aortic endothelial cells was reverse-transcribed with random oligonucleotide primers and reverse transcriptase in a 20 μil reaction volume. Primers specific for Lu-ECAM-1 sequences (primer pairs “L1”:SEQ ID NOS: 17 and 18, “L2”: SEQ ID NOs: 19 and 20), and primers specific for CA-CC sequences (primer pairs “T1”: SEQ ID NOs: 21 and 22, and “T2” SEQ ID NOs: 23 and 24) were confirmed for selectivity by control experiments with a Lu-ECAM-1 CDNA clone. Amplification was performed using 1 μl of the respective cDNA substrate for 35 cycles of amplification in a reaction volume of 50 [Li using 0.5 units of thermostable DNA polymerase, 200, uM of each dNTP, 1,5 mM MgCl₂, and 1 μM of the respective primer pair. The cycling protocol was 94° C. for 20 seconds, 55° C. for 10 seconds, and 72° C. for 10 seconds, with a time increment of 2 seconds per cycle for annealing and ° for 10 minutes. Aliquots (5 μl) of each amplification reaction was fractionated on a 1.5% agarose gel, and stained with ethidium bromide.

[0086] The calculated size for product amplified using primer pair L1 is 232 bp; the calculated size for product amplified using primer pair L2 is 218 bp; the calculated size for product amplified using primer pair T1 is 231 bp; and the calculated size for product amplified using primer pair T2 is 218 bp. As shown in FIG. 4A, Lu-ECAM-1 is expressed in bovine aortic endothelial cells, lung tissue, and spleen, tissue, but not in tracheal epithelium. In contrast, as shown in FIG. 4B, CA-CC is expressed in lung tissue and tracheal epithelium, but not in bovine aortic endothelial cells nor spleen tissue. These results further support that Lu-ECAM-1 and CA-CC are different molecular entities, with Lu-ECAM-1 being expressed in venular endothelial cells, and CA-CC being expressed in tracheal and bronchial epithelial cells.

EXAMPLE 5

[0087] This embodiment illustrates that a nucleic acid molecule comprising a nucleotide sequence encoding CACC-AM, or a variant sequence thereof, or encoding one or more CACC-AM associated proteins, can be inserted into various vectors including phage vectors and plasmids. Successful expression of the protein(s) requires that either the insert comprising the nucleotide sequence, or the vector itself, contain the necessary elements for transcription and translation (expression control elements) which is compatible with, and recognized by the particular host system used for expression. A variety of host systems may be utilized to express the recombinant protein(s), which include, but are not limited to bacteria transformed with a bacteriophage vector, plasmid vector, or cosmid DNA; yeast containing yeast vectors; fungi containing fungal vectors; insect cell lines infected with virus (e.g. baculovirus); and mammalian cell lines transfected with plasmid or viral expression vectors, or infected with recombinant virus (e.g. vaccinia virus, adenovirus, adeno-associated virus, retrovirus, etc.).

[0088] Using methods known in the art of molecular biology, including methods described above, various promoters and enhancers can be incorporated into the vector or the nucleic acid molecule encoding the recombinant protease, to increase the expression of the recombinant protein(s), provided that this increased expression is compatible with (for example, non-toxic to) the particular host cell system used. The selection of the promoter will depend on the expression system used. Promoters vary in strength, i.e. ability to facilitate transcription. Generally, for the purpose of expressing a cloned gene, it is desirable to use a strong promoter in order to obtain a high level of transcription of the gene or the variant sequence and expression into the recombinant protein. For example, bacterial, phage, or plasmid promoters known in the art from which a high level of transcription has been observed in a host cell system comprising E. coli include the lac promoter, trp promoter, tac promoter, reca promoter, ribosomal RNA promoter, the P_(R) and P_(L) promoters, lacUV5, ompf, bla, lpp, and the like, may be used to provide transcription of the inserted DNA sequence encoding the recombinant protein.

[0089] As known to those skilled in the art, such vectors for expression in mammalian cells can be selected from plasmids, viruses, and retroviruses. For a recent review of vectors useful in gene therapy, see Weichselbaum and Kufe (1997, Lancet, 349:S1O-S12). The features of a vector which make it useful in the methods of the present invention include that it have a selection marker for identifying vector which has inserted therein the nucleotide sequence to be expressed; restriction sites to facilitate cloning; and the ability to enter and/or replicate in mammalian cells. Examples of a preferred vector for the in vivo introduction of a recombinant vector into mammalian cells include, but are not limited to viral vectors. Virus-based vectors are one preferred vehicle as they infect cells in vivo, wherein during the infection process the viral genetic material is transferred into the cells. A retroviral vector, such as a plasmid containing AAV (Adeno-associated virus) sequences, has been described previously (see for example Chatterjee et al., 1992, Science, 258:1485-1488; U.S. Pat. No. 5,252,479, herein incorporated by reference). Examples of other vectors for the in vitro or in vivo introduction into mammalian cells include retroviral vectors (Miller et al., 1989, BioTechriiq-ues 7:980-990; Korman et al., 1987, Proc. Nati. Acad. Sci. USA 84:2150-54), papovavirus episomes (U.S. Pat. No. 5,624,820, herein incorporated by reference), and adenovirus vectors (U.S. Pat. No. 5,585,362, herein incorporated by reference). Promoters are known to those skilled in the art, and may include viral or viral-like basal promoters like the 5V40 late promoter, the RSV promoter, the CMV immediate early promoter, and a VL30 promoter; and cellular promoters (See, e.g., Larsen et al., 1995, Nucleic Acids Res. 23:1223-1230; Donis et al., 1993, BioTechniques 15:786-787; Donda et al., 1993, Mol. Cell. Endocrinol. 90:R23-26; and Huper et al., 1992, In Vitro Cell Dev. Biol. 28A:730-734).

[0090] In one illustration of this embodiment, a nucleotide sequence comprising clone 1 (SEQ ID NO:1) was placed under the control of a tetracycline-regulated promoter in a commercially available plasmid (pTet-Splice; GIBCO). The construction was accomplished in two steps. An amplified product was generated that corresponded to the 3′ end of clone 1 CDNA (nucleotide 2391 to nucleotide 2780 of SEQ ID NO:1) using a 5′ primer containing an EcoRI restriction site (SEQ ID NO:25) and a 3′ primer containing a SpeI restriction site (SEQ ID NO:26). The cycling protocol included 93° C. for 35 seconds, 55° C. for 60 seconds, 72° C. for 3 minutes for 40 cycles followed by a 10 minute incubation at 72° C. using a thermostable DNA polymerase. The product was cleaved with EcoRI and SpeI, then cloned into corresponding restriction sites in the plasmid. The resultant plasmid was selected and then sequenced to confirm absence of mutations. This recombinant plasmid was then cleaved with EcoRI and BglII. To reconstitute the open reading frame encoding Lu-ECAM-1, the 2.3 kb EcoRI/Bg1II fragment was excised from clone 3 and inserted into the plasmid. The resulting plasmid, pTet-Splice-Lu-ECAM-1, was then co-transfected into HEK293 cells with another plasmid (pTet-tTAK) that encodes a transcriptional activator specific for the pTet-Splice vector. Transfection was done using a transfection reagent (lipofectamine) according to the manufacturers instructions. Cells were harvested 24 hours after the start of transfection. Immunoblot analysis of the cells using polyclonal R41 resulted in the detection of recombinant Lu-ECAM-1 precursor of 120 kDa, and recombinant Lu-ECAM-1-associated protein of 38 kDa. When the cells were probed in immunoblot with anti-peptide antibody CU8, detected was recombinant Lu-ECAM-1 precursor of 120 kDa, and recombinant Lu-ECAM-1 of 90 kDa.

[0091] In another embodiment of the invention, mCLCA1 cDNA was cut from the pBluescript vector (Stratagene) with SacI and PvuI, blunt ended with Klenow Polymerase and inserted into the tetracycline sensitive mammalian expression vector (pTet-splice, Life Technologies, Inc.) at the EcoRV site. HEK293 cells were cotransfected with mCLCAl cDNA cloned into the pTet-splice along with a vector expressing a tetracycline activator (pTet-tTak) using standard transfection techniques well known to those skilled in the art and as described above (Lipofectamine, Life Technologies, Inc.). Cells were cotransfected with a reporter vector as described above. In another illustration of this embodiment, human CLCA1, HEK293 cells were transfected with either pcDNA 3.1 containing the CLCA1 insert and a reporter vector (enhanced green fluorescent protein, EGFP, CLONTECH) or the reporter vector alone. Transfection can be carried out by standard techniques known to those skilled in the art including CaPO4 precipitation or Lipofectamine (Life Technologies).

[0092] For human CLCA2, HEK293 cells were transfected using Lipofectamine using manufacturer's instructions. For example, 5 ul lipid and 0.5 ul of CLCA2 were cloned into pcDNA 3.1 per 35 mm well in a 2-3 hour incubation. For expression studies, the 2,832 bp CLCA2 ORF was PCR amplified from human trachea poly-A⁺RNA (Clontech) following reverse transcription with Superscript RNase H reverse transcriptase (Life Technologies) and random hexamer priming. PCR was performed with Pwo DNA Polymerase (Boehringer; initial denaturation at 94° C. for 3 min, 35 cycles of 94° for 50 s, 58° C. for 30s, and 72° C. for 2 min with a time increment of 3 s per cycle for each extension step (72° C.), followed by a final extension step of 72° C. for 8 min). Primer sequences were (upstream primer: SEQ ID NO:41, downstream primer: SEQ ID NO:42 with NotI-linkers underlined). PCR products were gel purified, incubated with NotI, and cloned into the expression vector pcDNA3.1 (Invitrogen). Four different PCR products were sequenced to control for potential PCR-induced sequence errors. Cells were simultaneously cotransfected with a reporter vector as described above. Chloride channel conductance activity was recorded after allowing the cells to recover for 24 hours.

[0093] The 2817 bp fragment of the hCLCA3 cDNA cloned into pcDNA3.1 was simultaneously transcribed and translated as described for the other CACC-AMs. Samples were analyzed by 10% SDS-PAGE (5 μl of a 25 μl reaction), followed by drying of the gel and exposure to film for 8 h. Protease protection assays were performed as described to ascertain whether hCLCA3 translation products were translocated into the microsomes and thus entered the secretory pathway. In the presence of microsomal membranes in vitro translated and ^(35S)-labeled wild type hCLCA3 was digested with Proteinase K (Sigma; 100 μg/ml) for 60 min on ice with or without detergent present (0.5% Nonidet-P 40). The reaction was stopped by adding phenylmethylsulfonyl fluoride and the products were analyzed by 10% SDS-PAGE and exposure to film. To allow for immunological detection of the translation products, three immunotagged cDNA clones were constructed (m1 to m3) by inserting a partial sequence of the human c-myc protein (EQKLISEEDL; SEQ ID NO: 47) into the amino termini of the first (m1), the second (m2), or both (m3) ORFS. Generation of these constructs using overlap extension PCR and Pwo DNA polymerase (Boehringer) was as described. Correct sequences of the constructs were verified by sequencing. Immunotagged DNA constructs were either in vitro translated as described above or transfected into 70% confluent human embryonic kidney (HEK) 293 or chinese hamster ovary (CHO) cells via the Lipofectamine Plus method (Life Technologies) Cell lysates were harvested after 48 h, resolved via 10% SDS-PAGE, and electroblotted onto nitrocellulose. Blots were probed with mouse-anti-human c-myc antibody 9E10 (1 μg/ml; Calbiochem) as primary antibody, horseradish peroxidase-conjugated goat anti-mouse antibody (0.2 μg/ml) as secondary antibody, and developed using enhanced chemiluminescence (Amersham). Secretion of the recombinant hCLCA3 protein into the culture supernatant was assayed by concentrating the conditioned medium (24 to 48 h after transfection) of HEK 293 or CHO cells transfected with construct m3 using ultrafiltration devices with a molecular cutoff at 10 kDa (Ultrafree-15, Biomax-l0 filter; Millipore; centrifugation at 2,000 g for 30 min at 4° C.).

EXAMPLE 6

[0094] This embodiment demonstrates that the CACC-AMs of the present invention can function as adhesion molecules. As an illustration, a recombinant LU-ECAM-1, encoded by a nucleic acid molecule according to the present invention, has unexpectedly improved biological activity. Recombinant (r) Lu-ECAM-1 and wild type (wt) Lu-ECAM-1 were compared in their adhesion ability to lung-metastatic B16-Fl0 melanoma cells. Using anti-Lu-ECAM-1 mAb 6D3, wtLu-ECAM-1 was purified from extracts of bovine aortic endothelial cells, and rLu-ECAM-1 was purified from extracts of transfected HEK293 cells. The tumor cell adhesion assay was performed as described previously (Zhu et al., 1992, supra). Briefly, 100 μg/ml in phosphate buffered saline of either wtLu-ECAM-1 or rLu-ECAM-1 was used to coat wells of 96 plates overnight at 4° C. Wells were then washed with tissue culture medium, and each well is seeded with a suspension of tissue culture medium and 2×104 tumor cells which had been radio-labelled. After being spun onto the coated wells at 15 g for 1 minute, and incubated for 10 minutes at 37° C., nonadherent tumor cells were spun off at 150 g for 5 minutes. Adherent tumor cells were then dissolved in 1% SDS and counted in a liquid scintillation counter. Tumor cell attachment is recorded as the percent cells bound of the total cells seeded. Inhibition of tumor cell adhesion is determined by first incubating the Lu-ECAM-1 coated wells with mAb 6D3 (10 μg/ml) for 1 hour at room temperature before the tumor cells are added.

[0095] As shown in FIG. 5, recombinant Lu-ECAM-1 has unexpectedly improved biological activity (e.g., adhesive function to lung-metastatic tumor cells) as compared to wild type Lu-ECAM-1. More particularly, rLu-ECAM-1 supported adhesion of 87of lung-metastatic tumor cells, whereas wtLu-ECAM-1 supported adhesion of only 43% of lung-metastatic tumor cells. Lung-metastatic tumor cell adhesion to wtLu-ECAM-1 was almost completely blocked by anti-Lu-ECAM-1 mAb 6D3, whereas lung-metastatic tumor cell adhesion to rLu-ECAM-1 was only partially inhibited (66%) by the concentration of anti-Lu-ECAM-1 mAb 6D3 used.

EXAMPLE 7

[0096] A comparison of the amino acid sequence of the CACC-AMs of the present invention is shown in FIG. 9. Sequence alignment and homology searches were carried out by using standard commercial software. For example, BLAST program was used for homology searches in existing data bases, and Megalign of the DNAStar package (Lasergene) was used for multiple sequence alignment. The sequence alignment of the four CACC-AMs of the present invention and the bovine CLCA (Cunningham et al. supra) indicates conservation throughout the entire length of the sequence, without the compartmentalization of more conserved domains. No significant homologies to any other chloride channel proteins were detected.

[0097] Table 1 illustrates a comparison of the size of the various mammalian Lu-ECAM-1 proteins and Lu-ECAM-1 associated proteins as encoded-by the respective open reading frames. TABLE 1 Total # of Species SEQ ID NO: Amino Acids Predicted Size bovine 2 and 3 905 a.a. 90 kD, 32-28 kD human 28 914 a.a. 90 kD, 40 kD hCLCA1 human 30 1000 a.a.  130 kD hCLCA3 (processing not known) human 32 943 a.a. 130 kD hCLCA2 (processing not known) murine 34 902 a.a. 130 kD, 125 kD mCLCA 90 kD, 32-38 kD

[0098] Table 2 is a comparison among the mammalian Lu-ECAM-1 family showing both an approximated amino acid similarity and an approximated amino acid identity (expressed as “similarity/identity”). TABLE 2 bovine murine human human human (SEQ ID (SEQ ID (SEQ ID (SEQ ID (SEQ ID NOs:2&3) NO:34 NO:28) NO:30) NO:32) bovine 100/100 81.3/70.8 67.4/52.4 85.7/77.4 63.7/49.8 (SEQ ID NOs:2&3) murine — 100/100 67.5/52.7 80.9/69.5 62.8/48.4 mCLCA (SEQ ID NO:34) human — — 100/100 65.3/51.4 62.3/44.7 hCLCA1 (SEQ ID NO:28 human — — — 100/100 62.1/48.2 hCLCA3 (SEQ ID NO:30) human — — — — 100/100 hCLCA2 (SEQ ID NO:32)

[0099] Table 3 is a comparison among the mammalian Lu--ECAM-1 gene family showing approximated nucleic acid similarities (expressed in %). TABLE 3 bovine murine human human human (SEQ ID (SEQ ID (SEQ ID (SED ID (SEQ ID NO:1) NO:33) NO:27) NO:29) NO:31) bovine 100 76.7 63.1 85.9 64.4 (SEQ ID NO:1) murine — 100 62.6 76.1 61.2 (SEQ ID NO:33) human — — 100 63.3 58.9 (SEQ ID NO:27) human — — — 100 62.6 (SEQ ID NO:29) human — — — — 100 (SEQ ID NO:31)

EXAMPLE 8

[0100] This embodiment illustrates that the full length cDNAs of the present invention encode calcium sensitive chloride channels. The various cDNAs were used for transfection of a cell line. For electrophysiological studies, cells were also cotransfected with a reporter vector (pEGFP, CLONTECH). Cotransfection with a reporter vector allows for easy identification of transfected cells by visualization under a fluorescent microscope. Whole cell recording was then carried out in the transfected cells to determine the presence of calcium sensitive chloride channels.

[0101] Transfected cells were used for electrophysiological recording. Cells were superfused with a bath solution containing 112 mM NMDG-Cl, 30 mM sucrose, 1 mM EGTA, 0.366 mM CaCl₂, 2 mM MgCl₂, 5 mM N-2-hydroxy-xyethanylpiperazine-N-2-ethanesulfonic acid. Whole cell channel activity was recorded in transfected cells by using borosilicate glass electrodes (tip resistance 4-9 M ohms) filled with the bath solution. Recordings were carried out in the presence or absence of a calcium channel inhibitors (DIDS, niflumic acid and DTT). To determine the effect of ionomycin on channel activity, electrodes filled with standard bath solution containing either 5 mM ATP and 1 mM EGTA in the presence of low intracellular calcium. After gigaohm seal formation, cells were clamped at +20 mV. Whole cell currents were recorded at room temperature, sampled at 5-10 kHz and filtered at 1-2 kHz. The I-V relationship was determined using 300 ms voltage steps from a holding potential of +20 mV to potentials from −100 to +100 mV at 10 mV intervals. To normalize measured membrane currents to membrane currents to membrane capacitance, the capacitive current transient recorded in response to a 10 mV hyperpolarizing pulse was integrated and divided by the given voltage to give total membrane capacitance (C_(m)) for each cell.

[0102] As shown in FIG. 9, expression of mCLCA₁ in HEK293 cells was associated with the appearance of a novel Ca2⁺sensitive Cl-channel as determined by whole cell recordings in the presence and absence of the Ca2⁺ionophore ionomycin (2 uM). As shown in FIG. 9b, at low intracellular free Ca2+concentrations, the basal current at +100 mV in mCLCA1-transfected cells was 2.05±1.09 pA/pF. With ionomycin the current increased to 10.23±3.46 pA/pF. No significant effect of these manipulations was seen in non-transfected or control-transfected cells. Basal currents in the presence of 2 mM Ca2+in transfected cells averaged 12.01±6.31 pA/pF. Perfusion of 300 uM DIDS reduced the current to 1.84 ±0.96. A similar effect was seen with NFA and DTT. These results indicate that the expression of mCLCA1 in HEK293 cells is associated with the appearance of a Ca2+sensitive chloride conductance. Under whole cell conditions, the current was outwardly rectified and inhibited by the anion channel blockers DIDS and NFA as well as the reducing agent DTT. This data is summarized in FIG. 10.

[0103] Whole cell recording of cells transfected with hCLCA1 cDNA demonstrated the induction of calcium sensitive chloride channels (FIG. 11). External perfusion of ionomycin (2 uM) was associated with an increase in the maximally activated current at +100 mV from 0.65 to 11.06 pA/pF. The current voltage relationship was outwardly rectified and reversed at 0 mV under symmetrical recording conditions. No effect of ionomycin was observed on non-transfected cells or control transfected cells. Addition of DIDS, DTT or niflumic acid reduced the currents to 1.63, 1.67 and 2.07 pA/pF respectively Cell attached patch recordings of single channels confirmed the presence of calcium sensitive anion channel (data not shown). This data is summarized in FIG. 12.

[0104] Whole cell recordings of hCLCA2 transfected HEK293 cells exhibited s slightly outwardly rectifying current/voltage relationship that was absent from control cells (transfected with vector alone; FIG. 13). This current was sensitive to DIDS (300 uM), DTT (2 mM), niflumic acid (100 uM), and tamoxifen (10 uM). When the pipet solution contained low Ca2=(about 25 nM) with 2 mM Ca2+in the bath, perfusion of the Ca2+ionophore ionomycin (4 uM) through the bath also activated the current (FIG. 13e).

[0105] These results indicate that the expression of CACC/AM molecules disclosed herein and their variants is associated with the appearance of calcium sensitive chloride channels.

EXAMPLE 9

[0106] This embodiment illustrates uses of the sequences according to the present invention. In one embodiment of the present invention, an individual having a primary tumor having lung-metastatic capabilities is treated with an anti-adhesion therapy comprising administering to the individual a therapeutically effective amount of a composition comprising either antibody raised to rLu-ECAM-1 or recombinant Lu-ECAM-1 complex, or a vector for expressing a soluble form of rLu-ECAM-1 or rLu-ECAM-1 complex which can then bind to the lung-metastatic tumor cells. Either composition may function to prevent lung-metastatic tumor cell adhesion to the lung venule endothelial cells, thereby preventing colonization by the metastatic tumor cells. As known to those skilled in the art, an effective amount of a therapeutic composition may depend on the route of administration (e.g., intravenous or other route known in the art), and physiological factors including the age, size, and rate of metabolism of the individual to be treated.

[0107] Another embodiment of the present invention is a method for providing calcium-dependent chloride conductance channels to mammalian cells. Recombinant Lu-ECAM-1 or rLu-ECAM-1 complex may form a chloride channel which may affect chloride secretion, and hence fluid secretion, from the cell. It may be that the chloride ion channel is coupled to the adhesion process involving the binding of Lu-ECAM-1 to a ligand, as similarly observed for the adherence and growth of lymphatic endothelial cells (Martin et al., 1996, supra). Thus, in mammalian cells in which the membrane chloride ion channels are deficient in number or function (e.g., in airway epithelial cells of cystic fibrosis patients), a method of providing to mammalian cells a calcium-dependent chloride conductance channel, rLu-ECAM-1 or rLu-ECAM-1 complex, comprises administering directly to the lung endothelial and/or epithelial cells (in vitro or in vivo) an expression vector. The expression vector contains a nucleic acid molecule(or a variant thereof) operably linked to expression control sequences, wherein the nucleic acid molecule encodes either rLu-ECAM-1 or rLu-ECAM-1 complex, with the resultant expression vector being introduced into the mammalian cell, and a functional calcium-dependent chloride conductance channel produced in the mammalian cells which contain the expression vector. The cells targeted for chloride conductance channel production may include airway cells selected from the group consisting of tracheal, bronchial or lung cells. If the cells are transfected in vitro, the transfected cells may then be introduced in vivo into the area of the lungs of the individual which is deficient in chloride channel function.

[0108] Having described the preferred embodiments of the present invention, it will be apparent to one of ordinary skill in the art that various modifications may be made to the disclosed embodiments, and that such modifications are intended to be within the scope of the present invention.

1 47 1 3317 DNA Unknown sequence encoding Lu-ECAM-1 and Lu-ECAM-1 associated protein from bovine endothelial cells 1 ggattccagg gtctccagca ttgcctgaat ctggatgtag gtttactgta 50 acatgtgcaa aa atg gtg ctc tgt ctg aat gtt att ctg ttc cta act 98 ttg cat ctc ttg cct gga atg aaa agt tca atg gta aat ttg att 143 aac aat ggg tat gat ggc att gtc att gca att aac ccc agt gtg 188 cca gaa gat gaa aaa ctc att gaa aac ata aag gaa atg gta act 233 gaa gct tct act tac ctg ttt cat gcc acc aaa cga aga gtt tat 278 ttc agg aat gtg agc att tta att cca atg acc tgg aaa tca aaa 323 tct gag tac ttc ata cca aaa caa gaa tca tat gac cag gca gat 368 gtc ata gtt gct aat ccc tat cta aaa tat gga gat gat ccc tat 413 aca ctt caa tat gga agg tgt gga gaa aaa gga aaa tat ata cat 458 ttt act cca aac ttc ttg ttg act aat aat ttc cac atc tat ggg 503 tcc cga ggc aga gta ttt gtc cat gag tgg gcc cat ctc cgc tgg 548 gga ata ttt gat gag tat aat gtg gac cag cca ttc tat att tcc 593 aga aag aac act att gaa gca aca aga tgt tca act cat att act 638 ggt att aat gtg gtt ttc aag aaa tgc cct gga ggc agc tgt ata 683 aca agt cta tgc aga cgt gac tca cag aca ggg ctg tat gaa gca 728 aaa tgt aca ttc ctt cca aaa aaa tcc cag act gca aag gaa tcc 773 att atg ttt atg cca agt ctc cat tct gtg act gaa ttt tgt aca 818 gaa aaa aca cac aat aca gaa gct cca aac cta caa aac aaa atg 863 tgc aat ggc aaa agc aca tgg gat gta atc atg aac tct gtt gac 908 ttt cag aat aca tct ccc atg aca gaa atg aat cca ccg act cat 953 cct aca ttt tca ttg ctc aag tcc aaa cag cgg gta gtc tgt ttg 998 gta ctt gat aaa tct gga agc atg tct gca gaa gac cgt ctc ttt 1043 caa atg aat caa gca gca gaa cta tac ttg att caa gtt att gaa 1088 aag gga tct tta gtt ggg atg gtt aca ttt gac agt gtt gct gaa 1133 atc caa aat cat cta aca aga ata act gat gat aat gtt tac caa 1178 aag atc acc gca aaa ctg cct caa gta gct aat ggt gga act tca 1223 att tgt aga ggg ctc aaa gca gga ttc cag gca att atc cac agt 1268 gac cag agt act tct ggt tct gaa atc ata cta tta act gat ggg 1313 gaa gat aat gaa ata aat tca tgc ttt gag gat gta aaa cga agt 1358 ggt gca atc atc cac acc att gct ctg gga ccc tct gct gcc aaa 1403 gaa ctg gag aca ttg tca aat atg aca gga gga tat cgt ttt ttt 1448 gcc aat aaa gac ata act ggc ctt act aat gct ttc agt aga att 1493 tca tct aga agt gga agc atc act cag cag gct att cag ttg gaa 1538 agc aaa gcc ttg aaa att aca gga agg aaa aga gta aac ggc aca 1583 gtg cct gta gac agt aca gtt gga aat gac act ttc ttt gtt gtc 1628 aca tgg aca ata caa aaa cca gaa att gtt ctc caa gat cca aaa 1673 gga aag aaa tat aaa acc tcg gat ttc aaa gaa gat aag tta aat 1718 att cga tct gct cgt ctg caa ata cct ggt att gca gag aca ggt 1763 act tgg act tac agc ctt cta aat aat cat gcc agc tct caa atg 1808 cta aca gtg aca gtg acc act cga gca aga agt cct act ata ccc 1853 cca gta att gca aca gct cac atg agt caa cat aca gca cat tat 1898 cct agc cca atg att gtt tat gca caa gtc agt caa ggg ttt ttg 1943 cct gta ctg gga atc agt gta ata gcc att ata gaa acc gaa gat 1988 gga cat caa gta aca ttg gag ctc tgg gac aat ggt gca ggt cgt 2033 gat act gtc aag aat gat ggc atc tac tca aga tac ttt aca gat 2078 tac tat gga aat ggt aga tac agt tta aaa gta cat gca cag gca 2123 aga aac aac acg gct agg cta aat tta aga caa cca cag aac aaa 2168 gtt cta tat gtt cca ggc tac gtt gaa aac ggt aaa att ata ctg 2213 aac cca ccc aga cct gaa gtc aaa gat gac ctg gca aaa gct aaa 2258 ata gaa gac ttt agc aga cta acc tct gga ggg tca ttt act gta 2303 tca gga gct cct cct cct ggt aat cac cct tct gtg ttc cca ccc 2348 agt aaa att aca gat ctt gag gct aag ttc aaa gaa gat tat att 2393 caa ctt tca tgg aca gcc cct ggc aat gtc cta gat aaa gga aaa 2438 gcc aac agc tac att ata aga ata agt aag agt ttc atg gat cgt 2483 caa gaa gat ttt gac aat gcg act tta gtg aat act tct aat cta 2528 ata cct aag gag gcc gga tca aaa gaa aat ttt gaa ttt aag cca 2573 gaa cat ttt aga gta gaa aat ggc acc aaa ttc tat att tca gtc 2618 caa gcc atc aac gaa gcc aat ctc atc tca gag gtt tct cac att 2663 gta caa gca atc aaa ttt att cct cta cca gaa gac agt gtc cat 2708 gat ctg ggt acc aag att tct gaa atc act ctg gca att tta gga 2753 tta cca atg att ttc tct gta ttt taaactagga attgtgtcag 2797 cactgataac caatgttata catagttggt acacatttat ttaggattta 2847 attcgctatt ttcttgttct tcagtagcta aattgtgtcc aaccttgcga 2897 ctgcaggact gcagcatgcc aggtttccct gtccatcacc aactcccaga 2947 gcttgctcaa atccatgttc atttgagtca gtaatgctaa ctatctcatc 2997 ctctactgcc ctcttctctg tttaccttca atctttcccc agcattagga 3047 tcttttccaa tgagtcagct cttagcatcg ggtggccaaa atattggcat 3097 tttcagcaac agttcttcaa atgaaatatc cagggtgatt ttctttagga 3147 tagactggtg actgacagtt caagggacac tctggagtct tctccagcac 3197 cgcaccgcag tttgaaagaa ccagttcttt ggtactcagc cttctttata 3247 gtccaatgct cacatctatc atgactcctg gaaaaaccat agctttgaga 3297 aatggatctt tgttgggaaa 3317 2 905 PRT Unknown Lu-ECAM-1 precursor from bovine endothelial cells 2 Met Val Leu Cys Leu Asn Val Ile Leu Phe Leu Thr Leu His Leu -20 -15 -10 Leu Pro Gly Met Lys Ser Ser Met Val Asn Leu Ile Asn Asn Gly -5 1 5 Tyr Asp Gly Ile Val Ile Ala Ile Asn Pro Ser Val Pro Glu Asp 10 15 20 Glu Lys Leu Ile Glu Asn Ile Lys Glu Met Val Thr Glu Ala Ser 25 30 35 Thr Tyr Leu Phe His Ala Thr Lys Arg Arg Val Tyr Phe Arg Asn 40 45 50 Val Ser Ile Leu Ile Pro Met Thr Trp Lys Ser Lys Ser Glu Tyr 55 60 65 Phe Ile Pro Lys Gln Glu Ser Tyr Asp Gln Ala Asp Val Ile Val 70 75 80 Ala Asn Pro Tyr Leu Lys Tyr Gly Asp Asp Pro Tyr Thr Leu Gln 85 90 95 Tyr Gly Arg Cys Gly Glu Lys Gly Lys Tyr Ile His Phe Thr Pro 100 105 110 Asn Phe Leu Leu Thr Asn Asn Phe His Ile Tyr Gly Ser Arg Gly 115 120 125 Arg Val Phe Val His Glu Trp Ala His Leu Arg Trp Gly Ile Phe 130 135 140 Asp Glu Tyr Asn Val Asp Gln Pro Phe Tyr Ile Ser Arg Lys Asn 145 150 155 Thr Ile Glu Ala Thr Arg Cys Ser Thr His Ile Thr Gly Ile Asn 160 165 170 Val Val Phe Lys Lys Cys Pro Gly Gly Ser Cys Ile Thr Ser Leu 175 180 185 Cys Arg Arg Asp Ser Gln Thr Gly Leu Tyr Glu Ala Lys Cys Thr 190 195 200 Phe Leu Pro Lys Lys Ser Gln Thr Ala Lys Glu Ser Ile Met Phe 205 210 215 Met Pro Ser Leu His Ser Val Thr Glu Phe Cys Thr Glu Lys Thr 220 225 230 His Asn Thr Glu Ala Pro Asn Leu Gln Asn Lys Met Cys Asn Gly 235 240 245 Lys Ser Thr Trp Asp Val Ile Met Asn Ser Val Asp Phe Gln Asn 250 255 260 Thr Ser Pro Met Thr Glu Met Asn Pro Pro Thr His Pro Thr Phe 265 270 275 Ser Leu Leu Lys Ser Lys Gln Arg Val Val Cys Leu Val Leu Asp 280 285 290 Lys Ser Gly Ser Met Ser Ala Glu Asp Arg Leu Phe Gln Met Asn 295 300 305 Gln Ala Ala Glu Leu Tyr Leu Ile Gln Val Ile Glu Lys Gly Ser 310 315 320 Leu Val Gly Met Val Thr Phe Asp Ser Val Ala Glu Ile Gln Asn 325 330 335 His Leu Thr Arg Ile Thr Asp Asp Asn Val Tyr Gln Lys Ile Thr 340 345 350 Ala Lys Leu Pro Gln Val Ala Asn Gly Gly Thr Ser Ile Cys Arg 355 360 365 Gly Leu Lys Ala Gly Phe Gln Ala Ile Ile His Ser Asp Gln Ser 370 375 380 Thr Ser Gly Ser Glu Ile Ile Leu Leu Thr Asp Gly Glu Asp Asn 385 390 395 Glu Ile Asn Ser Cys Phe Glu Asp Val Lys Arg Ser Gly Ala Ile 400 405 410 Ile His Thr Ile Ala Leu Gly Pro Ser Ala Ala Lys Glu Leu Glu 415 420 425 Thr Lys Ser Asn Met Thr Gly Gly Tyr Arg Phe Phe Ala Asn Lys 430 435 440 Asp Ile Thr Gly Leu Thr Asn Ala Phe Ser Arg Ile Ser Ser Arg 445 450 455 Ser Gly Ser Ile Thr Gln Gln Ala Ile Gln Leu Glu Ser Lys Ala 460 465 470 Leu Lys Ile Thr Gly Arg Lys Arg Val Asn Gly Thr Val Pro Val 475 480 485 Asp Ser Thr Val Gly Asn Asp Thr Phe Phe Val Val Thr Trp Thr 490 495 500 Ile Gln Lys Pro Glu Ile Val Leu Gln Asp Pro Lys Gly Lys Lys 505 510 515 Tyr Lys Thr Ser Asp Phe Lys Glu Asp Lys Leu Asn Ile Arg Ser 520 525 530 Ala Arg Leu Gln Ile Pro Gly Ile Ala Glu Thr Gly Thr Trp Thr 535 540 545 Tyr Ser Leu Leu Asn Asn His Ala Ser Ser Gln Met Leu Thr Val 550 555 560 Thr Val Thr Thr Arg Ala Arg Ser Pro Thr Ile Pro Pro Val Ile 565 570 575 Ala Thr Ala His Met Ser Gln His Thr Ala His Tyr Pro Ser Pro 580 585 590 Met Ile Val Tyr Ala Gln Val Ser Gln Gly Phe Leu Pro Val Leu 595 600 605 Gly Ile Ser Val Ile Ala Ile Ile Glu Thr Glu Asp Gly His Gln 610 615 620 Val Thr Leu Glu Leu Trp Asp Asn Gly Ala Gly Arg Asp Thr Val 625 630 635 Lys Asn Asp Gly Ile Tyr Ser Arg Tyr Phe Thr Asp Tyr Tyr Gly 640 645 650 Asn Gly Arg Tyr Ser Leu Lys Val His Ala Gln Ala Arg Asn Asn 655 660 665 Thr Ala Arg Leu Asn Leu Arg Gln Pro Gln Asn Lys Val Leu Tyr 670 675 680 Val Pro Gly Tyr Val Glu Asn Gly Lys Ile Ile Leu Asn Pro Pro 685 690 695 Arg Pro Glu Val Lys Asp Asp Leu Ala Lys Ala Lys Ile Glu Asp 700 705 710 Phe Ser Arg Leu Thr Ser Gly Gly Ser Phe Thr Val Ser Gly Ala 715 720 725 Pro Pro Pro Gly Asn His Pro Ser Val Phe Pro Pro Ser Lys Ile 730 735 740 Thr Asp Leu Glu Ala Lys Phe Lys Glu Asp Tyr Ile Gln Leu Ser 745 750 755 Trp Thr Ala Pro Gly Asn Val Leu Asp Lys Gly Lys Ala Asn Ser 760 765 770 Tyr Ile Ile Arg Ile Ser Lys Ser Phe Met Asp Arg Gln Glu Asp 775 780 785 Phe Asp Asn Ala Thr Leu Val Asn Thr Ser Asn Leu Ile Pro Lys 790 795 800 Glu Ala Gly Ser Lys Glu Asn Phe Glu Phe Lys Pro Glu His Phe 805 810 815 Arg Val Glu Asn Gly Thr Lys Phe Tyr Ile Ser Val Gln Ala Ile 820 825 830 Asn Glu Ala Asn Leu Ile Ser Glu Val Ser His Ile Val Gln Ala 835 840 845 Ile Lys Phe Ile Pro Leu Pro Glu Asp Ser Val His Asp Leu Gly 850 855 860 Thr Lys Ile Ser Glu Ile Thr Leu Ala Ile Leu Gly Leu Pro Met 865 870 875 Ile Phe Ser Val Phe 880 884 3 203 PRT Unknown Lu-ECAM-1 associated protein from bovine endothelial cells 3 Val Leu Tyr Val Pro Gly Tyr Val Glu Asn Gly Lys Ile Ile Leu 1 5 10 15 Asn Pro Pro Arg Pro Glu Val Lys Asp Asp Leu Ala Lys Ala Lys 20 25 30 Ile Glu Asp Phe Ser Arg Leu Thr Ser Gly Gly Ser Phe Thr Val 35 40 45 Ser Gly Ala Pro Pro Pro Gly Asn His Pro Ser Val Phe Pro Pro 50 55 60 Ser Lys Ile Thr Asp Leu Glu Ala Lys Phe Lys Glu Asp Tyr Ile 65 70 75 Gln Leu Ser Trp Thr Ala Pro Gly Asn Val Leu Asp Lys Gly Lys 80 85 90 Ala Asn Ser Tyr Ile Ile Arg Ile Ser Lys Ser Phe Met Asp Arg 95 100 105 Gln Glu Asp Phe Asp Asn Ala Thr Leu Val Asn Thr Ser Asn Leu 110 115 120 Ile Pro Lys Glu Ala Gly Ser Lys Glu Asn Phe Glu Phe Lys Pro 125 130 135 Glu His Phe Arg Val Glu Asn Gly Thr Lys Phe Tyr Ile Ser Val 140 145 150 Gln Ala Ile Asn Glu Ala Asn Leu Ile Ser Glu Val Ser His Ile 155 160 165 Val Gln Ala Ile Lys Phe Ile Pro Leu Pro Glu Asp Ser Val His 170 175 180 Asp Leu Gly Thr Lys Ile Ser Glu Ile Thr Leu Ala Ile Leu Gly 185 190 195 Leu Pro Met Ile Phe Ser Val Phe 200 203 4 26 DNA Artificial sequence Amplification primer 4 aatttaagcc agaacatttt agagta 26 5 23 DNA Artificial sequence Amplification primer 5 gaaaatggca ccaaattcta tat 23 6 23 DNA Artificial sequence Amplification primer 6 atatagaatt tggtgccatt ttc 23 7 19 DNA Artificial sequence Amplification primer 7 tagaagtatt cactaaagt 19 8 28 DNA Artificial Sequence Amplification primer 8 tactgtctac aggcactgtg ccgtttac 28 9 18 DNA Artificial sequence Amplification primer 9 ggaatatttg atgagtat 18 10 18 DNA Artificial sequence Amplification primer 10 attcatttga aagagacg 18 11 795 PRT Unknown Variant of Lu-ECAM-1 from bovine endothelial cells 11 Met Val Leu Cys Leu Asn Val Ile Leu Phe Leu Thr Leu His Leu -20 -15 -10 Leu Pro Gly Met Lys Ser Ser Met Val Asn Leu Ile Asn Asn Gly -5 1 5 Tyr Asp Gly Ile Val Ile Ala Ile Asn Pro Ser Val Pro Glu Asp 10 15 20 Glu Lys Leu Ile Glu Asn Ile Lys Glu Met Val Thr Glu Ala Ser 25 30 35 Thr Tyr Leu Phe His Ala Thr Lys Arg Arg Val Tyr Phe Arg Asn 40 45 50 Val Ser Ile Leu Ile Pro Met Thr Trp Lys Ser Lys Ser Glu Tyr 55 60 65 Phe Ile Pro Lys Gln Glu Ser Tyr Asp Gln Ala Asp Val Ile Val 70 75 80 Ala Asn Pro Tyr Leu Lys Tyr Gly Asp Asp Pro Tyr Thr Leu Gln 85 90 95 Tyr Gly Arg Cys Gly Glu Lys Gly Lys Tyr Ile His Phe Thr Pro 100 105 110 Asn Phe Leu Leu Thr Asn Asn Phe His Ile Tyr Gly Ser Arg Gly 115 120 125 Arg Val Phe Val His Glu Trp Ala His Leu Arg Trp Gly Ile Phe 130 135 140 Asp Glu Tyr Asn Val Asp Gln Pro Phe Tyr Ile Ser Arg Lys Asn 145 150 155 Thr Ile Glu Ala Thr Arg Cys Ser Thr His Ile Thr Gly Ile Asn 160 165 170 Val Val Phe Lys Lys Cys Pro Gly Gly Ser Cys Ile Thr Ser Leu 175 180 185 Cys Arg Arg Asp Ser Gln Thr Gly Leu Tyr Glu Ala Lys Cys Thr 190 195 200 Phe Leu Pro Lys Lys Ser Gln Thr Ala Lys Glu Ser Ile Met Phe 205 210 215 Met Pro Ser Leu His Ser Val Thr Glu Phe Cys Thr Glu Lys Thr 220 225 230 His Asn Thr Glu Ala Pro Asn Leu Gln Asn Lys Met Cys Asn Gly 235 240 245 Lys Ser Thr Trp Asp Val Ile Met Asn Ser Val Asp Phe Gln Asn 250 255 260 Thr Ser Pro Met Thr Glu Met Asn Pro Pro Thr His Pro Thr Phe 265 270 275 Ser Leu Leu Lys Ser Lys Gln Arg Val Val Cys Leu Val Leu Asp 280 285 290 Lys Ser Gly Ser Met Ser Ala Glu Asp Arg Leu Phe Gln Met Asn 295 300 305 Gln Ala Ala Glu Leu Tyr Leu Ile Gln Val Ile Glu Lys Gly Ser 310 315 320 Leu Val Gly Met Val Thr Phe Asp Ser Val Ala Glu Ile Gln Asn 325 330 335 His Leu Thr Arg Ile Thr Asp Asp Asn Val Tyr Gln Lys Ile Thr 340 345 350 Ala Lys Leu Pro Gln Val Ala Asn Gly Gly Thr Ser Ile Cys Arg 355 360 365 Gly Leu Lys Ala Gly Phe Gln Ala Ile Ile His Ser Asp Gln Ser 370 375 380 Thr Ser Gly Ser Glu Ile Ile Leu Leu Thr Asp Gly Glu Asp Asn 385 390 395 Glu Ile Asn Ser Cys Phe Glu Asp Val Lys Arg Ser Gly Ala Ile 400 405 410 Ile His Thr Ile Ala Leu Gly Pro Ser Ala Ala Lys Glu Leu Glu 415 420 425 Thr Lys Ser Asn Met Thr Gly Gly Tyr Arg Phe Phe Ala Asn Lys 430 435 440 Asp Ile Thr Gly Leu Thr Asn Ala Phe Ser Arg Ile Ser Ser Arg 445 450 455 Ser Gly Ser Ile Thr Gln Gln Ala Ile Gln Leu Glu Ser Lys Ala 460 465 470 Leu Lys Ile Thr Gly Arg Lys Arg Val Asn Gly Thr Val Pro Val 475 480 485 Asp Ser Thr Val Gly Asn Asp Thr Phe Phe Val Val Thr Trp Thr 490 495 500 Ile Gln Lys Pro Glu Ile Val Leu Gln Asp Pro Lys Gly Lys Lys 505 510 515 Tyr Lys Thr Ser Asp Phe Lys Glu Asp Lys Leu Asn Ile Arg Ser 520 525 530 Ala Arg Leu Gln Ile Pro Gly Ile Ala Glu Thr Gly Thr Trp Thr 535 540 545 Tyr Ser Leu Leu Asn Asn His Ala Ser Ser Gln Met Leu Thr Val 550 555 560 Thr Val Thr Thr Arg Ala Arg Ser Pro Thr Ile Pro Pro Val Ile 565 570 575 Ala Thr Ala His Met Ser Gln His Thr Ala His Tyr Pro Ser Pro 580 585 590 Met Ile Val Tyr Ala Gln Val Ser Gln Gly Phe Leu Pro Val Leu 595 600 605 Gly Ile Ser Val Ile Ala Ile Ile Glu Thr Glu Asp Gly His Gln 610 615 620 Val Thr Leu Glu Leu Trp Asp Asn Gly Ala Gly Arg Asp Thr Val 625 630 635 Lys Asn Asp Gly Ile Tyr Ser Arg Tyr Phe Thr Asp Tyr Tyr Gly 640 645 650 Asn Gly Arg Tyr Ser Leu Lys Val His Ala Gln Ala Arg Asn Asn 655 660 665 Thr Ala Arg Leu Asn Leu Arg Gln Pro Gln Asn Lys Val Leu Tyr 670 675 680 Val Pro Gly Tyr Val Glu Asn Gly Lys Ile Ile Leu Asn Pro Pro 685 690 695 Arg Pro Glu Val Lys Asp Asp Leu Ala Lys Ala Lys Ile Glu Asp 700 705 710 Phe Ser Arg Leu Thr Ser Gly Gly Ser Phe Thr Val Ser Gly Ala 715 720 725 Pro Pro Pro Gly Asn His Pro Ser Val Phe Pro Pro Ser Lys Ile 730 735 740 Thr Asp Leu Glu Ala Lys Phe Lys Glu Asp Tyr Ile Gln Leu Ser 745 750 755 Trp Thr Ala Pro Gly Asn Val Leu Asp Lys Gly Lys Ala Glu Ser 760 765 770 774 12 821 PRT Unknown Variant of Lu-ECAM-1 from bovine endothelial cells 12 Met Val Leu Cys Leu Asn Val Ile Leu Phe Leu Thr Leu His Leu -20 -15 -10 Leu Pro Gly Met Lys Ser Ser Met Val Asn Leu Ile Asn Asn Gly -5 1 5 Tyr Asp Gly Ile Val Ile Ala Ile Asn Pro Ser Val Pro Glu Asp 10 15 20 Glu Lys Leu Ile Glu Asn Ile Lys Glu Met Val Thr Glu Ala Ser 25 30 35 Thr Tyr Leu Phe His Ala Thr Lys Arg Arg Val Tyr Phe Arg Asn 40 45 50 Val Ser Ile Leu Ile Pro Met Thr Trp Lys Ser Lys Ser Glu Tyr 55 60 65 Phe Ile Pro Lys Gln Glu Ser Tyr Asp Gln Ala Asp Val Ile Val 70 75 80 Ala Asn Pro Tyr Leu Lys Tyr Gly Asp Asp Pro Tyr Thr Leu Gln 85 90 95 Tyr Gly Arg Cys Gly Glu Lys Gly Lys Tyr Ile His Phe Thr Pro 100 105 110 Asn Phe Leu Leu Thr Asn Asn Phe His Ile Tyr Gly Ser Arg Gly 115 120 125 Arg Val Phe Val His Glu Trp Ala His Leu Arg Trp Gly Ile Phe 130 135 140 Asp Glu Tyr Asn Val Asp Gln Pro Phe Tyr Ile Ser Arg Lys Asn 145 150 155 Thr Ile Glu Ala Thr Arg Cys Ser Thr His Ile Thr Gly Ile Asn 160 165 170 Val Val Phe Lys Lys Cys Pro Gly Gly Ser Cys Ile Thr Ser Leu 175 180 185 Cys Arg Arg Asp Ser Gln Thr Gly Leu Tyr Glu Ala Lys Cys Thr 190 195 200 Phe Leu Pro Lys Lys Ser Gln Thr Ala Lys Glu Ser Ile Met Phe 205 210 215 Met Pro Ser Leu His Ser Val Thr Glu Phe Cys Thr Glu Lys Thr 220 225 230 His Asn Thr Glu Ala Pro Asn Leu Gln Asn Lys Met Cys Asn Gly 235 240 245 Lys Ser Thr Trp Asp Val Ile Met Asn Ser Val Asp Phe Gln Asn 250 255 260 Thr Ser Pro Met Thr Glu Met Asn Pro Pro Thr His Pro Thr Phe 265 270 275 Ser Leu Leu Lys Ser Lys Gln Arg Val Val Cys Leu Val Leu Asp 280 285 290 Lys Ser Gly Ser Met Ser Ala Glu Asp Arg Leu Phe Gln Met Asn 295 300 305 Gln Ala Ala Glu Leu Tyr Leu Ile Gln Val Ile Glu Lys Gly Ser 310 315 320 Leu Val Gly Met Val Thr Phe Asp Ser Val Ala Glu Ile Gln Asn 325 330 335 His Leu Thr Arg Ile Thr Asp Asp Asn Val Tyr Gln Lys Ile Thr 340 345 350 Ala Lys Leu Pro Gln Val Ala Asn Gly Gly Thr Ser Ile Cys Arg 355 360 365 Gly Leu Lys Ala Gly Phe Gln Ala Ile Ile His Ser Asp Gln Ser 370 375 380 Thr Ser Gly Ser Glu Ile Ile Leu Leu Thr Asp Gly Glu Asp Asn 385 390 395 Glu Ile Asn Ser Cys Phe Glu Asp Val Lys Arg Ser Gly Ala Ile 400 405 410 Ile His Thr Ile Ala Leu Gly Pro Ser Ala Ala Lys Glu Leu Glu 415 420 425 Thr Lys Ser Asn Met Thr Gly Gly Tyr Arg Phe Phe Ala Asn Lys 430 435 440 Asp Ile Thr Gly Leu Thr Asn Ala Phe Ser Arg Ile Ser Ser Arg 445 450 455 Ser Gly Ser Ile Thr Gln Gln Ala Ile Gln Leu Glu Ser Lys Ala 460 465 470 Leu Lys Ile Thr Gly Arg Lys Arg Val Asn Gly Thr Val Pro Val 475 480 485 Asp Ser Thr Val Gly Asn Asp Thr Phe Phe Val Val Thr Trp Thr 490 495 500 Ile Gln Lys Pro Glu Ile Val Leu Gln Asp Pro Lys Gly Lys Lys 505 510 515 Tyr Lys Thr Ser Asp Phe Lys Glu Asp Lys Leu Asn Ile Arg Ser 520 525 530 Ala Arg Leu Gln Ile Pro Gly Ile Ala Glu Thr Gly Thr Trp Thr 535 540 545 Tyr Ser Leu Leu Asn Asn His Ala Ser Ser Gln Met Leu Thr Val 550 555 560 Thr Val Thr Thr Arg Ala Arg Ser Pro Thr Ile Pro Pro Val Ile 565 570 575 Ala Thr Ala His Met Ser Gln His Thr Ala His Tyr Pro Ser Pro 580 585 590 Met Ile Val Tyr Ala Gln Val Ser Gln Gly Phe Leu Pro Val Leu 595 600 605 Gly Ile Ser Val Ile Ala Ile Ile Glu Thr Glu Asp Gly His Gln 610 615 620 Val Thr Leu Glu Leu Trp Asp Asn Gly Ala Gly Arg Asp Thr Val 625 630 635 Lys Asn Asp Gly Ile Tyr Ser Arg Tyr Phe Thr Asp Tyr Tyr Gly 640 645 650 Asn Gly Arg Tyr Ser Leu Lys Val His Ala Gln Ala Arg Asn Asn 655 660 665 Thr Ala Arg Leu Asn Leu Arg Gln Pro Gln Asn Lys Val Leu Tyr 670 675 680 Val Pro Gly Tyr Val Glu Asn Gly Lys Ile Ile Leu Asn Pro Pro 685 690 695 Arg Pro Glu Val Lys Asp Asp Leu Ala Lys Ala Lys Ile Glu Asp 700 705 710 Phe Ser Arg Leu Thr Ser Gly Gly Ser Phe Thr Val Ser Gly Ala 715 720 725 Pro Pro Pro Gly Asn His Pro Ser Val Phe Pro Pro Ser Lys Ile 730 735 740 Thr Asp Leu Glu Ala Lys Phe Lys Glu Asp Tyr Ile Gln Leu Ser 745 750 755 Trp Thr Ala Pro Gly Asn Val Leu Asp Lys Gly Lys Ala Ala Ser 760 765 770 Gly Ser Phe Pro Met Ser Arg Phe Ser His Gln Val Ala Lys Val 775 780 785 Leu Glu Leu Gln Leu Gln His Gln Ser Phe Gln 790 795 800 13 342 PRT Unknown Variant of Lu-ECAM-1 from bovine endothelial cells 13 Met Val Leu Cys Leu Asn Val Ile Leu Phe Leu Thr Leu His Leu -20 -15 -10 Leu Pro Gly Met Lys Ser Ser Met Val Asn Leu Ile Asn Asn Gly -5 1 5 Tyr Asp Gly Ile Val Ile Ala Ile Asn Pro Ser Val Pro Glu Asp 10 15 20 Glu Lys Leu Ile Glu Asn Ile Lys Glu Met Val Thr Glu Ala Ser 25 30 35 Thr Tyr Leu Phe His Ala Thr Lys Arg Arg Val Tyr Phe Arg Asn 40 45 50 Val Ser Ile Leu Ile Pro Met Thr Trp Lys Ser Lys Ser Glu Tyr 55 60 65 Phe Ile Pro Lys Gln Glu Ser Tyr Asp Gln Ala Asp Val Ile Val 70 75 80 Ala Asn Pro Tyr Leu Lys Tyr Gly Asp Asp Pro Tyr Thr Leu Gln 85 90 95 Tyr Gly Arg Cys Gly Glu Lys Gly Lys Tyr Ile His Phe Thr Pro 100 105 110 Asn Phe Leu Leu Thr Asn Asn Phe His Ile Tyr Gly Ser Arg Gly 115 120 125 Arg Val Phe Val His Glu Trp Ala His Leu Arg Trp Gly Ile Phe 130 135 140 Asp Glu Tyr Asn Val Asp Gln Pro Phe Tyr Ile Ser Arg Lys Asn 145 150 155 Thr Ile Glu Ala Thr Arg Cys Ser Thr His Ile Thr Gly Ile Asn 160 165 170 Val Val Phe Lys Lys Cys Pro Gly Gly Ser Cys Ile Thr Ser Leu 175 180 185 Cys Arg Arg Asp Ser Gln Thr Gly Leu Tyr Glu Ala Lys Cys Thr 190 195 200 Phe Leu Pro Lys Lys Ser Gln Thr Ala Lys Glu Ser Ile Met Phe 205 210 215 Met Pro Ser Leu His Ser Val Thr Glu Phe Cys Thr Glu Lys Thr 220 225 230 His Asn Thr Glu Ala Pro Asn Leu Gln Asn Lys Met Cys Asn Gly 235 240 245 Lys Ser Thr Trp Asp Val Ile Met Asn Ser Val Asp Phe Gln Asn 250 255 260 Thr Ser Pro Met Thr Glu Met Asn Pro Pro Thr His Pro Thr Phe 265 270 275 Ser Leu Leu Lys Ser Lys Gln Arg Val Val Cys Leu Val Leu Asp 280 285 290 Lys Ser Gly Ser Met Ser Ala Glu Asp Ile Tyr Leu Leu Ala Leu 295 300 305 Leu Ile Lys Ile Phe Lys Leu Ile Gly Asn Thr Ile 310 315 320 321 14 335 DNA Artificial sequence Oligonucleotide probe 14 caacagctac attataagaa taagtaagag tttcatggat cgtcaagaag 50 attttgacaa tgcgacttta gtgaatactt ctaatctaat acctaaggag 100 gccggatcaa aagaaaattt tgaatttaag ccagaacatt ttagagtaga 150 aaatggcacc aaattctata tttcagtcca agccatcaac gaagccaatc 200 tcatctcaga ggtttctcac attgtacaag caatcaaatt tattcctcta 250 ccagaagaca gtgtccatga tctgggtacc aagatttctg aaatcactct 300 ggcaatttta ggattaccaa tgattttctc tgtat 335 15 17 PRT Artificial sequence Synthetic peptide 15 Glu Asp Glu Lys Leu Ile Glu Asn Ile Lys Glu Met Val Thr Glu 5 10 15 Ala Ser 17 16 17 PRT Artificial sequence synthetic peptide 16 Gln Asp Pro Lys Gly Lys Lys Tyr Lys Thr Ser Asp Phe Lys Glu 1 5 10 15 Asp Lys 17 17 24 DNA Artificial Sequence Amplification primer 17 atgttcaact catattactg gtat 24 18 20 DNA Artificial sequence Amplification primer 18 tgtaggtttg gagcttctgt 20 19 20 DNA Artificial Sequence Amplification primer 19 cacagacagg gctgtatgaa 20 20 23 DNA Artificial Sequence Amplification Primer 20 ggagatgtat tctgaaagtc aac 23 21 24 DNA Artificial Sequence Amplification primer 21 atgttcaact catattactg gtac 24 22 20 DNA Artificial Sequence Amplification primer 22 tgtaggtttg gagcttccac 20 23 20 DNA Artificial Sequence Amplification primer 23 cacagacagg gctgtatgag 20 24 23 DNA Artificial Sequence Amplification primer 24 ggagatgtat tttgaaagtc agt 23 25 32 DNA Artificial Sequence Amplification primer 25 actgaattca gcagactaac ctctggaggg tc 32 26 32 DNA Artificial Sequence Amplification primer 26 tctactagta gctttagcta ctgaagaaca ag 32 27 3007 DNA Homo sapiens 27 taacccgcat tttccaaaga gaggaatcac agggagatgt acagca atg ggg 52 cca ttt aag agt tct gtg ttc atc ttg att ctt cac ctt cta gaa 97 ggg gcc ctg agt aat tca ctc att cag ctg aac aac aat ggc tat 142 gaa ggc att gtc gtt gca atc gac ccc aat gtg cca gaa gat gaa 187 aca ctc att caa caa ata aag gac atg gtg acc cag gca tct ctg 232 tat ctg ttt gaa gct aca gga aag cga ttt tat ttc aaa aat gtt 277 gcc att ttg att cct gaa aca tgg aag aca aag gct gac tat gtg 322 aga cca aaa ctt gag acc tac aaa aat gct gat gtt ctg gtt gct 367 gag tct act cct cca ggt aat gat gaa ccc tac act gag cag atg 412 ggc aac tgt gga gag aag ggt gaa agg atc cac ctc act cct gat 457 ttc att gca gga aaa aag tta gct gaa tat gga cca caa ggt aag 502 gca ttt gtc cat gag tgg gct cat cta cga tgg gga gta ttt gac 547 gag tac aat aat gat gag aaa ttc tac tta tcc aat gga aga ata 592 caa gca gta aga tgt tca gca ggt att act ggt aca aat gta gta 637 aag aag tgt cag gga ggc agc tgt tac acc aaa aga tgc aca ttc 682 aat aaa gtt aca gga ctc tat gaa aaa gga tgt gag ttt gtt ctc 727 caa tcc cgc cag acg gag aag gct tct ata atg ttt gca caa cat 772 gtt gat tct ata gtt gaa ttc tgt aca gaa caa aac cac aac aaa 817 gaa gct cca aac aag caa aat caa aaa tgc aat ctc cga agc aca 862 tgg gaa gtg atc cgt gat tct gag gac ttt aag aaa acc act cct 907 atg aca aca cag cca cca aat ccc acc ttc tca ttg ctg cag att 952 gga caa aga att gtg tgt tta gtc ctt gac aaa tct gga agc atg 997 gcg act ggt aac cgc ctc aat cga ctg aat caa gca ggc cag ctt 1042 ttc ctg ctg cag aca gtt gag ctg ggg tcc tgg gtt ggg atg gtg 1087 aca ttt gac agt gct gcc cat gta caa agt gaa ctc ata cag ata 1132 aac agt ggc agt gac agg gac aca ctc gcc aaa aga tta cct gca 1177 gca gct tca gga ggg acg tcc atc tgc agc ggg ctt cga tcg gca 1222 ttt act gtg att agg aag aaa tat cca act gat gga tct gaa att 1267 gtg ctg ctg acg gat ggg gaa gac aac act ata agt ggg tgc ttt 1312 aac gag gtc aaa caa agt ggt gcc atc atc cac aca gtc gct ttg 1357 ggg ccc tct gca gct caa gaa cta gag gag ctg tcc aaa atg aca 1402 gga ggt tta cag aca tat gct tca gat caa gtt cag aac aat ggc 1447 ctc att gat gct ttt ggg gcc ctt tca tca gga aat gga gct gtc 1492 tct cag cgc tcc atc cag ctt gag agt aag gga tta acc ctc cag 1537 aac agc cag tgg atg aat ggc aca gtg atc gtg gac agc acc gtg 1582 gga aag gac act ttg ttt ctt atc acc tgg aca acg cag cct ccc 1627 caa atc ctt ctc tgg gat ccc agt gga cag aag caa ggt ggc ttt 1672 gta gtg gac aaa aac acc aaa atg gcc tac ctc caa atc cca ggc 1717 att gct aag gtt ggc act tgg aaa tac agt ctg caa gca agc tca 1762 caa acc ttg acc ctg act gtc acg tcc cgt gcg tcc aat gct acc 1807 ctg cct cca att aca gtg act tcc aaa acg aac aag gac acc agc 1852 aaa ttc ccc agc cct ctg gta gtt tat gca aat att cgc caa gga 1897 gcc tcc cca att ctc agg gcc agt gtc aca gcc ctg att gaa tca 1942 gtg aat gga aaa aca gtt acc ttg gaa cta ctg gat aat gga gca 1987 ggt gct gat gct act aag gat gac ggt gtc tac tca agg tat ttc 2032 aca act tat gac acg aat ggt aga tac agt gta aaa gtg cgg gct 2077 ctg gga gga gtt aac gca gcc aga cgg aga gtg ata ccc cag cag 2122 agt gga gca ctg tac ata cct ggc tgg att gag aat gat gaa ata 2167 caa tgg aat cca cca aga cct gaa att aat aag gat gat gtt caa 2212 cac aag caa gtg tgt ttc agc aga aca tcc tcg gga ggc tca ttt 2257 gtg gct tct gat gtc cca aat gct ccc ata cct gat ctc ttc cca 2302 cct ggc caa atc acc gac ctg aag gcg gaa att cac ggg ggc agt 2347 ctc att aat ctg act tgg aca gct cct ggg gat gat tat gac cat 2392 gga aca gct cac aag tat atc att cga ata agt aca agt att ctt 2437 gat ctc aga gac aag ttc aat gaa tct ctt caa gtg aat act act 2482 gct ctc atc cca aag gaa gcc aac tct gag gaa gtc ttt ttg ttt 2527 aaa cca gaa aac att act ttt gaa aat ggc aca gat ctt ttc att 2572 gct att cag gct gtt gat aag gtc gat ctg aaa tca gaa ata tcc 2617 aac att gca cga gta tct ttg ttt att cct cca cag act ccg cca 2662 gag aca cct agt cct gat gaa acg tct gct cct tgt cct aat att 2707 cat atc aac agc acc att cct ggc att cac att tta aaa att atg 2752 tgg aag tgg ata gga gaa ctg cag ctg tca ata gcc tagggctgaa 2798 tttttgtcag ataaataaaa taaatcattc atcctttttt ttgattataa 2848 aattttttaa aatgtatttt agaattcctg tagggggcga tatactaaat 2898 gtatatagta catttatact aaatgtattc ctgtaggggg cgatatacta 2948 aatgtatttt agaattcctg tagggggcga taaaataaaa tgctaaacaa 2998 ctggggaaa 3007 28 914 PRT Homo sapiens 28 Met Gly Pro Phe Lys Ser Ser Val Phe Ile Leu Ile Leu His Leu 1 5 10 15 Leu Glu Gly Ala Leu Ser Asn Ser Leu Ile Gln Leu Asn Asn Asn 20 25 30 Gly Tyr Glu Gly Ile Val Val Ala Ile Asp Pro Asn Val Pro Glu 35 40 45 Asp Glu Thr Leu Ile Gln Gln Ile Lys Asp Met Val Thr Gln Ala 50 55 60 Ser Leu Tyr Leu Phe Glu Ala Thr Gly Lys Arg Phe Tyr Phe Lys 65 70 75 Asn Val Ala Ile Leu Ile Pro Glu Thr Trp Lys Thr Lys Ala Asp 80 85 90 Tyr Val Arg Pro Lys Leu Glu Thr Tyr Lys Asn Ala Asp Val Leu 95 100 105 Val Ala Glu Ser Thr Pro Pro Gly Asn Asp Glu Pro Tyr Thr Glu 110 115 120 Gln Met Gly Asn Cys Gly Glu Lys Gly Glu Arg Ile His Leu Thr 125 130 135 Pro Asp Phe Ile Ala Gly Lys Lys Leu Ala Glu Tyr Gly Pro Gln 140 145 150 Gly Lys Ala Phe Val His Glu Trp Ala His Leu Arg Trp Gly Val 155 160 165 Phe Asp Glu Tyr Asn Asn Asp Glu Lys Phe Tyr Leu Ser Asn Gly 170 175 180 Arg Ile Gln Ala Val Arg Cys Ser Ala Gly Ile Thr Gly Thr Asn 185 190 195 Val Val Lys Lys Cys Gln Gly Gly Ser Cys Tyr Thr Lys Arg Cys 200 205 210 Thr Phe Asn Lys Val Thr Gly Leu Tyr Glu Lys Gly Cys Glu Phe 215 220 225 Val Leu Gln Ser Arg Gln Thr Glu Lys Ala Ser Ile Met Phe Ala 230 235 240 Gln His Val Asp Ser Ile Val Glu Phe Cys Thr Glu Gln Asn His 245 250 255 Asn Lys Glu Ala Pro Asn Lys Gln Asn Gln Lys Cys Asn Leu Arg 260 265 270 Ser Thr Trp Glu Val Ile Arg Asp Ser Glu Asp Phe Lys Lys Thr 275 280 285 Thr Pro Met Thr Thr Gln Pro Pro Asn Pro Thr Phe Ser Leu Leu 290 295 300 Gln Ile Gly Gln Arg Ile Val Cys Leu Val Leu Asp Lys Ser Gly 305 310 315 Ser Met Ala Thr Gly Asn Arg Leu Asn Arg Leu Asn Gln Ala Gly 320 325 330 Gln Leu Phe Leu Leu Gln Thr Val Glu Leu Gly Ser Trp Val Gly 335 340 345 Met Val Thr Phe Asp Ser Ala Ala His Val Gln Ser Glu Leu Ile 350 355 360 Gln Ile Asn Ser Gly Ser Asp Arg Asp Thr Leu Ala Lys Arg Leu 365 370 375 Pro Ala Ala Ala Ser Gly Gly Thr Ser Ile Cys Ser Gly Leu Arg 380 385 390 Ser Ala Phe Thr Val Ile Arg Lys Lys Tyr Pro Thr Asp Gly Ser 395 400 405 Glu Ile Val Leu Leu Thr Asp Gly Glu Asp Asn Thr Ile Ser Gly 410 415 420 Cys Phe Asn Glu Val Lys Gln Ser Gly Ala Ile Ile His Thr Val 425 430 435 Ala Leu Gly Pro Ser Ala Ala Gln Glu Leu Glu Glu Leu Ser Lys 440 445 450 Met Thr Gly Gly Leu Gln Thr Tyr Ala Ser Asp Gln Val Gln Asn 455 460 465 Asn Gly Leu Ile Asp Ala Phe Gly Ala Leu Ser Ser Gly Asn Gly 470 475 480 Ala Val Ser Gln Arg Ser Ile Gln Leu Glu Ser Lys Gly Leu Thr 485 490 495 Leu Gln Asn Ser Gln Trp Met Asn Gly Thr Val Ile Val Asp Ser 500 505 510 Thr Val Gly Lys Asp Thr Leu Phe Leu Ile Thr Trp Thr Thr Gln 515 520 525 Pro Pro Gln Ile Leu Leu Trp Asp Pro Ser Gly Gln Lys Gln Gly 530 535 540 Gly Phe Val Val Asp Lys Asn Thr Lys Met Ala Tyr Leu Gln Ile 545 550 555 Pro Gly Ile Ala Lys Val Gly Thr Trp Lys Tyr Ser Leu Gln Ala 560 565 570 Ser Ser Gln Thr Leu Thr Leu Thr Val Thr Ser Arg Ala Ser Asn 575 580 585 Ala Thr Leu Pro Pro Ile Thr Val Thr Ser Lys Thr Asn Lys Asp 590 595 600 Thr Ser Lys Phe Pro Ser Pro Leu Val Val Tyr Ala Asn Ile Arg 605 610 615 Gln Gly Ala Ser Pro Ile Leu Arg Ala Ser Val Thr Ala Leu Ile 620 625 630 Glu Ser Val Asn Gly Lys Thr Val Thr Leu Gln Leu Leu Asp Asn 635 640 645 Gly Ala Gly Ala Asp Ala Thr Lys Asp Asp Gly Val Tyr Ser Arg 650 655 660 Tyr Phe Thr Thr Tyr Asp Thr Asn Gly Arg Tyr Ser Val Lys Val 665 670 675 Arg Ala Leu Gly Gly Val Asn Ala Ala Arg Arg Arg Val Ile Pro 680 685 690 Gln Gln Ser Gly Ala Leu Tyr Ile Pro Gly Trp Ile Glu Asn Asp 695 700 705 Glu Ile Gln Trp Asn Pro Pro Arg Pro Glu Ile Asn Lys Asp Asp 710 715 720 Val Gln His Lys Gln Val Cys Phe Ser Arg Thr Ser Ser Gly Gly 725 730 735 Ser Phe Val Ala Ser Asp Val Pro Asn Ala Pro Ile Pro Asp Leu 740 745 750 Phe Pro Pro Gly Gln Ile Thr Asp Leu Lys Ala Glu Ile His Gly 755 760 765 Gly Ser Leu Ile Asn Leu Thr Trp Thr Ala Pro Gly Asp Asp Tyr 770 775 780 Asp His Gly Thr Ala His Lys Tyr Ile Ile Arg Ile Ser Thr Ser 785 790 795 Ile Leu Asp Leu Arg Asp Lys Phe Asn Glu Ser Leu Gln Val Asn 800 805 810 Thr Thr Ala Leu Ile Pro Lys Glu Ala Asn Ser Glu Glu Val Phe 815 820 825 Leu Phe Lys Pro Glu Asn Ile Thr Phe Glu Asn Gly Thr Asp Leu 830 835 840 Phe Ile Ala Ile Gln Ala Val Asp Lys Val Asp Leu Lys Ser Glu 845 850 855 Ile Ser Asn Ile Ala Arg Val Ser Leu Phe Ile Pro Pro Gln Thr 860 865 870 Pro Pro Glu Thr Pro Ser Pro Asp Glu Thr Ser Ala Pro Cys Pro 875 880 885 Asn Ile His Ile Asn Ser Thr Ile Pro Gly Ile His Ile Leu Lys 890 895 900 Ile Met Trp Lys Trp Ile Gly Glu Leu Gln Leu Ser Ile Ala 905 910 914 29 3418 DNA Homo sapiens 29 tttgtttaac atgcaaga atg gtg ttc agt ctg aag gtg att ctc ttc 48 cta tcc ttg ctt ctc tcg cct gta ttg aaa agc tca ctg gta act 93 ttg aat aac aat gga tat gat ggc att gtg att gca att aat ccc 138 agt gta cca gaa gat gaa aaa ctc att caa aac ata aag gaa atg 183 gta act gaa gca tct act cac ctg ttt cat gcc acc aaa caa aga 228 gct tat ttc agg aat gta agc att tta att cca atg acc tac aaa 273 tca aaa tct gag tac tta atc cca aaa caa gaa aca tat gac cag 318 gca gat gtc ata gtt gct gat ctt tac ctg aaa tac gga gat gat 363 ccc tat aca ctt caa tat gga caa tgt gga gat aaa gga caa tat 408 ata cat ttt act cca aac ttc ttg ttg act aat aac ttg gct acc 453 tat ggg cct cga ggt aaa gta ttt gtc cat ggg tgg gcc cat ctc 498 cgg tgg gga gta ttt gat gag tat aat gtg gac cag cca ttc tat 543 att tcc aga aga aac act act gaa gca aca aga tgt tcc act cgt 588 att act gtt tac atg gtt ttg aac gaa tgc aag ggg gcc agc tgt 633 ata gca cga cca ttc aga cgt gac tca cag aca ggg ctg tat gaa 678 gca aaa tgt aca ttt atc cca aag aga tcc cag act gcc aag gaa 723 tcc att gtg ttt atg caa aat ctt gat tct gtg act gaa ttt tgt 768 act gaa aaa aca cac aat aaa gaa gct cca aac cta tat aac aaa 813 atg tgc aat cac aga agc aca tgg gat gta atc atg agc tct gaa 858 gat ttt cag cat tta tct ccc atg aca gaa ata aat tta cct cgt 903 cct aca ttt tca ttg ctc aag tcc aaa cag cgt gta gtc tgt ttg 948 gta ctt gat aaa tct gga agc atg aat gca gaa gac cgt ctc ttt 993 cga atg aat caa gca gca gaa ttg tac ttg att caa att att gaa 1038 aag gga tcc ttg gtt ggg ttg gtc aca ttt gac agt ttt gct aaa 1083 atc caa agt aag ctc ata aaa ata att gat gat aac act tac caa 1128 aag atc act gca aac ctg cct caa gaa gct gat ggt ggc act tca 1173 att tgc agg gga ctc aaa gca gga ttt cag gca att ccc cag agt 1218 aat cag agt act ttc ggt tct gaa atc ata tta cta aca gat ggg 1263 gaa gat tat caa ata agc tta tgc ttt gga gag gta aaa caa agt 1308 ggc aca gtc atc cac acc att gct ctg ggg ccg tct gct gac gaa 1353 gaa ctg gag acc ctg tca aat atg aca gga tta cat aag gga cac 1398 tgt tat act gaa agt tca tat agt gct ggg aag ttc atc ttt tgt 1443 gga cat cgt ttt tat gcc cat aaa aac ata aat ggc ctt att gat 1488 gct ttc agc aga att tca tct aga agt ggc agc atc tct cag cag 1533 gct ctt cag ttg gaa agt aaa act ttg aat atc cca gcg aag aaa 1578 tgg ata aat ggt aca gtg cct gtg gat agt aca gtt aga aat gat 1623 act tcc ttt gtt gtc aca tgg acg ata caa aag cca gca ata att 1668 ctt caa gat cca aaa gga aaa aaa tat act acc tca gat ttt caa 1713 gaa ggt gaa cta aat att cgg tct gcc cgt ctt cga ata cca ggt 1758 att gca gag aca ggc act tgg act tac agc gtt cga aac aat cat 1803 acc aaa tct caa ttg cta act gtg aca atg acc act cga gca aga 1848 agc cct acc aca ctc cca gta att gca act gct cac atg agt caa 1893 aat aca gct cat tac cct agc cca gtg att gtt tat gca tgt gtc 1938 agt caa ggg ttt ctt cct gtt ctg gga atc aat gta aca gcc att 1983 ata gaa aat gaa gag gga cat caa gta aca ttg gag ctc tgc gac 2028 aat ggc gca ggt gct gat tct gtc aag aat gat ggc atc tac tca 2073 agg tat ttt aca gat tac cat gga aat ggt aga tac agt tta aaa 2118 gtg ctt acc cag gca aga aaa aac aca gct agg cta agt caa caa 2163 cag aat aaa gct ctg tat gta ccg cgc tat gct gaa aat gga aaa 2208 att ata ctg aac cca tcc aaa cct gaa gtc aca gat gat gtg gaa 2253 gga gct caa aca gac gac ttc agc aga ctc acc tct gga ggg tcg 2298 ttt act gta tca gga gtg cct cct aat ggt aat cat tct cag gtg 2343 ttc tca cct ggt aaa att gta gac ctc gag gct aag ttt caa gga 2388 gat cat att caa ctt tca tgg act gcc cct ggc aag gtc ctc gat 2433 aaa gga aga gct gag agc tac att ata aga ata agt aaa cat ttc 2478 ctg gac ctc caa gaa gat ttt gat aaa gct gct tta ata aat act 2523 tct ggt ctg ata cct aag gag cct ggt tca gta gaa agt ttt gaa 2568 ttt aaa cca gaa cct tct aaa ata gag aat ggt acg aca ttc tat 2613 att gca att caa gcc atc cat gaa gcc aat gtc acc tca gag gtt 2658 tca aac att gca caa gca act aac ttt att cct cca cag gaa ccc 2703 agc att cct gat ctg ggt acc aat att tct gca atc agt ttg gca 2748 att ttt gga tta gct gta att tta tct ata ttt tat act aga aat 2793 tat att aga act caa att caa tgt tat aca tac ttg gta aac att 2838 tat tta aaa ttt aat tta cta tac tta ttg tct att ata aag ctc 2883 att ata ata tat aaa gtg aag tac aaa agt tgt aag ttt cct aat 2928 tac ttg att aat tat tac tat ttg agt tat tat atg tta atc aaa 2973 atg agt ata tca ttt cct gtc tgg aat aat cca ctc att aat ttt 3018 taatatgaaa agatatatat ttgtacttgt aagcatttta agaaacattt 3068 ttaaagtgtg ctacaaattc atttggtgta ctaacatcaa aatgtatcca 3118 agccatttaa aaaatattta tatatacata gtagcaaata gttttataga 3168 tttatttgta tcgcattttt tattacaaat gaatatttca tgtttatata 3218 agctgtaatc aaaaaggact agtagtagta gtaaggaagt caaatttgtt 3268 tttttatcat tgattataag tggtatattt gttttttgtc attgattaaa 3318 agtgatttta gccctaggcc cgaaatgact agcaaatatc attttctgta 3368 tgaattgtgg aacatcacaa taaaattatt tctgtgctga tgctaaaaaa 3418 30 1000 PRT Homo sapiens 30 Met Val Phe Ser Leu Lys Val Ile Leu Phe Leu Ser Leu Leu Leu 1 5 10 15 Ser Pro Val Leu Lys Ser Ser Leu Val Thr Leu Asn Asn Asn Gly 20 25 30 Tyr Asp Gly Ile Val Ile Ala Ile Asn Pro Ser Val Pro Glu Asp 35 40 45 Glu Lys Leu Ile Gln Asn Ile Lys Glu Met Val Thr Gln Ala Ser 50 55 60 Thr His Leu Phe His Ala Thr Lys Gln Arg Ala Tyr Phe Arg Asn 65 70 75 Val Ser Ile Leu Ile Pro Met Thr Tyr Lys Ser Lys Ser Glu Tyr 80 85 90 Leu Ile Pro Lys Gln Glu Thr Tyr Asp Gln Ala Asp Val Ile Val 95 100 105 Ala Asp Leu Tyr Leu Lys Tyr Gly Asp Asp Pro Tyr Thr Leu Gln 110 115 120 Tyr Gly Gln Cys Gly Asp Lys Gly Gln Tyr Ile His Phe Thr Pro 125 130 135 Asn Phe Leu Leu Thr Asn Asn Leu Ala Thr Tyr Gly Pro Arg Gly 140 145 150 Lys Val Phe Val His Gly Trp Ala His Leu Arg Trp Gly Val Phe 155 160 165 Asp Glu Tyr Asn Val Asp Gln Pro Phe Tyr Ile Ser Arg Arg Asn 170 175 180 Thr Thr Glu Ala Thr Arg Cys Ser Thr Arg Ile Thr Val Tyr Met 185 190 195 Val Leu Asn Glu Cys Lys Gly Ala Ser Cys Ile Ala Arg Pro Phe 200 205 210 Arg Arg Asp Ser Gln Thr Gly Leu Tyr Glu Ala Lys Cys Thr Phe 215 220 225 Ile Pro Lys Arg Ser Gln Thr Ala Lys Glu Ser Ile Val Phe Met 230 235 240 Gln Asn Leu Asp Ser Val Thr Glu Phe Cys Thr Glu Lys Thr His 245 250 255 Asn Lys Glu Ala Pro Asn Leu Tyr Asn Lys Met Cys Asn His Arg 260 265 270 Ser Thr Trp Asp Val Ile Met Ser Ser Glu Asp Phe Gln His Leu 275 280 285 Ser Pro Met Thr Glu Ile Asn Leu Pro Arg Pro Thr Phe Ser Leu 290 295 300 Leu Lys Ser Lys Gln Arg Val Val Cys Leu Val Leu Asp Lys Ser 305 310 315 Gly Ser Met Asn Ala Glu Asp Arg Leu Phe Arg Met Asn Gln Ala 320 325 330 Ala Glu Leu Tyr Leu Ile Gln Ile Ile Glu Lys Gly Ser Leu Val 335 340 345 Gly Leu Val Thr Phe Asp Ser Phe Ala Lys Ile Gln Ser Lys Leu 350 355 360 Ile Lys Ile Ile Asp Asp Asn Thr Tyr Gln Lys Ile Thr Ala Asn 365 370 375 Leu Pro Gln Glu Ala Asp Gly Gly Thr Ser Ile Cys Arg Gly Leu 380 385 390 Lys Ala Gly Phe Gln Ala Ile Pro Gln Ser Asn Gln Ser Thr Phe 395 400 405 Gly Ser Glu Ile Ile Leu Leu Thr Asp Gly Glu Asp Tyr Gln Ile 410 415 420 Ser Leu Cys Phe Gly Glu Val Lys Gln Ser Gly Thr Val Ile His 425 430 435 Thr Ile Ala Leu Gly Pro Ser Ala Asp Glu Glu Leu Glu Thr Leu 440 445 450 Ser Asn Met Thr Gly Leu His Lys Gly His Cys Tyr Thr Glu Ser 455 460 465 Ser Tyr Ser Ala Gly Lys Phe Ile Phe Cys Gly His Arg Phe Tyr 470 475 480 Ala His Lys Asn Ile Asn Gly Leu Ile Asp Ala Phe Ser Arg Ile 485 490 495 Ser Ser Arg Ser Gly Ser Ile Ser Gln Gln Ala Leu Gln Leu Glu 500 505 510 Ser Lys Thr Leu Asn Ile Pro Ala Lys Lys Trp Ile Asn Gly Thr 515 520 525 Val Pro Val Asp Ser Thr Val Arg Asn Asp Thr Ser Phe Val Val 530 535 540 Thr Trp Thr Ile Gln Lys Pro Ala Ile Ile Leu Gln Asp Pro Lys 545 550 555 Gly Lys Lys Tyr Thr Thr Ser Asp Phe Gln Glu Gly Glu Leu Asn 560 565 570 Ile Arg Ser Ala Arg Leu Arg Ile Pro Gly Ile Ala Glu Thr Gly 575 580 585 Ile Trp Thr Tyr Ser Val Arg Asn Asn His Thr Lys Ser Gln Leu 590 595 600 Leu Thr Val Thr Met Thr Thr Arg Ala Arg Ser Pro Thr Thr Leu 605 610 615 Pro Val Ile Ala Thr Ala His Ser Met Gln Asn Thr Ala His Tyr 620 625 630 Pro Ser Pro Val Ile Val Tyr Ala Cys Val Ser Gln Gly Phe Leu 635 640 645 Pro Val Leu Gly Ile Asn Val Thr Ala Ile Ile Glu Asn Glu Glu 650 655 660 Gly His Gln Val Thr Leu Glu Leu Cys Asp Asn Gly Ala Gly Ala 665 670 675 Asp Ser Val Lys Asn Asp Gly Ile Tyr Ser Arg Tyr Phe Thr Asp 680 685 690 Tyr His Gly Asn Gly Arg Tyr Ser Leu Lys Val Leu Thr Gln Ala 695 700 705 Arg Lys Asn Thr Ala Arg Leu Ser Gln Gln Gln Asn Lys Ala Leu 710 715 720 Tyr Val Pro Arg Tyr Ala Glu Asn Gly Lys Ile Ile Leu Asn Pro 725 730 735 Ser Lys Pro Glu Val Thr Asp Asp Val Glu Gly Ala Gln Thr Asp 740 745 750 Asp Phe Ser Arg Leu Thr Ser Gly Gly Ser Phe Thr Val Ser Gly 755 760 765 Val Pro Pro Asn Gly Asn His Ser Gln Val Phe Ser Pro Gly Lys 770 775 780 Ile Val Asp Leu Glu Ala Lys Phe Gln Gly Asp His Ile Gln Leu 785 790 795 Ser Trp Thr Ala Pro Gly Lys Val Leu Asp Lys Gly Arg Ala Glu 800 805 810 Ser Tyr Ile Ile Arg Ile Ser Lys His Phe Leu Asp Leu Gln Glu 815 820 825 Asp Phe Asp Lys Ala Ala Leu Ile Asn Thr Ser Gly Leu Ile Pro 830 835 840 Lys Glu Pro Gly Ser Val Glu Ser Phe Glu Phe Lys Pro Glu Pro 845 850 855 Ser Lys Ile Glu Asn Gly Thr Thr Phe Tyr Ile Ala Ile Gln Ala 860 865 870 Ile His Glu Ala Asn Val Thr Ser Glu Val Ser Asn Ile Ala Gln 875 880 885 Ala Thr Asn Phe Ile Pro Pro Gln Glu Pro Ser Ile Pro Asp Leu 890 895 900 Gly Thr Asn Ile Ser Ala Ile Ser Leu Ala Ile Phe Gly Leu Ala 905 910 915 Val Ile Leu Ser Ile Phe Tyr Thr Arg Asn Tyr Ile Arg Thr Gln 920 925 930 Ile Gln Cys Tyr Thr Tyr Leu Val Asn Ile Tyr Leu Lys Phe Asn 935 940 945 Leu Leu Tyr Leu Leu Ser Ile Ile Lys Leu Ile Ile Ile Tyr Lys 950 955 960 Val Lys Tyr Lys Ser Cys Lys Phe Pro Asn Tyr Leu Ile Asn Tyr 965 970 975 Tyr Tyr Leu Ser Tyr Tyr Met Leu Ile Lys Met Ser Ile Ser Phe 980 985 990 Pro Val Trp Asn Asn Pro Leu Ile Asn Phe 995 1000 31 2970 DNA Homo sapiens 31 acctaaaacc ttgcaagttc aggaagaaac catctgcatc catattgaaa 50 acctgacaca atgtatgcag caggctcagt gtgagtgaac tggaggcttc 100 tctacaac atg acc caa agg agc att gca ggt cct att tgc aac 144 ctg aag ttt gtg act ctc ctg gtt gcc tta agt tca gaa ctc cca 189 ttc ctg gga gct gga gta cag ctt caa gac aat ggg tat aat gga 234 ttg ctc att gca att aat cct cag gta cct gag aat cag aac ctc 279 atc tca aac att aag gaa atg ata act gaa gct tca ttt tac cta 324 ttt aat gct acc aag aga aga gta ttt ttc aga aat ata aag att 369 tta ata cct gcc aca tgg aaa gct aat aat aac agc aaa ata aaa 414 caa gaa tca tat gaa aag gca aat gtc ata gtg act gac tgg tat 459 ggg gca cat gga gat gat cca tac acc cta caa tac aga ggg tgt 504 gga aaa gag gga aaa tac att cat ttc aca cct aat ttc cta ctg 549 aat gat aac tta aca gct ggc tac gga tca cga ggc cga gtg ttt 594 gtc cat gaa tgg gcc cac ctc cgt tgg ggt gtg ttc gat gag tat 639 aac aat gac aaa cct ttc tac ata aat ggg caa aat caa att aaa 684 gtg aca agg tgt tca tct gac atc aca ggc att ttt gtg tgt gaa 729 aaa ggt cct tgc ccc caa gaa aac tgt att att agt aag ctt ttt 774 aaa gaa gga tgc acc ttt atc tac aat agc acc caa aat gca act 819 gca tca ata atg ttc atg caa agt tta tct tct gtg gtt gaa ttt 864 tgt aat gca agt acc cac aac caa gaa gca cca aac cta cag aac 909 cag atg tgc agc ctc aga agt gca tgg gat gta atc aca gac tct 954 gct gac ttt cac cac agc ttt ccc atg aat ggg act gag ctt cca 999 cct cct ccc aca ttc tcg ctt gta cag gct ggt gac aaa gtg gtc 1044 tgt tta gtg ctg gat gtg tcc agc aag atg gca gag gct gac aga 1089 ctc ctt caa cta caa caa gcc gca gaa ttt tat ttg atg cag att 1134 gtt gaa att cat acc ttc gtg ggc att gcc agt ttc gac agc aaa 1179 gga gag atc aga gcc cag cta cac caa att aac agc aat gat gat 1224 cga aag ttg ctg gtt tca tat ctg ccc acc act gta tca gct aaa 1269 aca gac atc agc att tgt tca ggg ctt aag aaa gga ttt gag gtg 1314 gtt gaa aaa ctg aat gga aaa gct tat ggc tct gtg atg ata tta 1359 gtg acc agc gga gat gat aag ctt ctt ggc aat tgc tta ccc act 1404 gtg ctc agc agt ggt tca aca att cac tcc att gcc ctg ggt tca 1449 tct gca gcc cca aat ctg gag gaa tta tca cgt ctt aca gga ggt 1494 tta aag ttc ttt gtt cca gat ata tca aac tcc aat agc atg att 1539 gat gct ttc agt aga att tcc tct gga act gga gac att ttc cag 1584 caa cat att cag ctt gaa agt aca ggt gaa aat gtc aaa cct cac 1629 cat caa ttg aaa aac aca gtg act gtg gat aat act gtg ggc aac 1674 gac act atg ttt cta gtt acg tgg cag gcc agt ggt cct cct gag 1719 att ata tta ttt gat cct gat gga cga aaa tac tac aca aat aat 1764 ttt atc acc aat cta act ttt cgg aca gct agt ctt tgg att cca 1809 gga aca gct aag cct ggg cac tgg act tac acc ctg aac aat acc 1854 cat cat tct ctg caa gcc ctg aaa gtg aca gtg acc tct cgc gcc 1899 tcc aac tca gct gtg ccc cca gcc act gtg gaa gcc ttt gtg gaa 1944 aga gac agc ctc cat ttt cct cat cct gtg atg att tat gcc aat 1989 gtg aaa cag gga ttt tat ccc att ctt aat gcc act gtc act gcc 2034 aca gtt gag cca gag act gga gat cct gtt acg ctg aga ctc ctt 2079 gat gat gga gca ggt gct gat gtt ata aaa aat gat gga att tac 2124 tcg agg tat ttt ttc tcc ttt gct gca aat ggt aga tat agc ttg 2169 aaa gtg cat gtc aat cac tct ccc agc ata agc acc cca gcc cac 2214 tct att cca ggg agt cat gct atg tat gta cca ggt tac aca gca 2259 aac ggt aat att cag atg aat gct cca agg aaa tca gta ggc aga 2304 aat gag gag gag cga aag tgg ggc ttt agc cga gtc agc tca gga 2349 ggc tcc ttt tca gtg ctg gga gtt cca gct ggc ccc cac cct gat 2394 gtg ttt cca cca tgc aaa att att gac ctg gaa gct gta aaa gta 2439 gaa gag gaa ttg acc cta tct tgg aca gca cct gga gaa gac ttt 2484 gat cag ggc cag gct aca agc tat gaa ata aga atg agt aaa agt 2529 cta cag aat atc caa gat gac ttt aac aat gct att tta gta aat 2574 aca tca aag cga aat cct cag caa gct ggc atc agg gag ata ttt 2619 acg ttc tca ccc cag att tcc acg aat gga cct gaa cat cag cca 2664 aat gga gaa aca cat gaa agc cac aga att tat gtt gca ata cga 2709 gca atg gat agg aac tcc tta cag tct gct gta tct aac att gcc 2754 cag gcg cct ctg ttt att ccc ccc aat tct gat cct gta cct gcc 2799 aga gat tat ctt ata ttg aaa gga gtt tta aca gca atg ggt ttg 2844 ata gga atc att tgc ctt att ata gtt gtg aca cat cat act tta 2889 agc agg aaa aag aga gca gac aag aaa gag aat gga aca aaa tta 2934 tta taaataaata tccaaagtgt cttccttctc aaa 2970 32 943 PRT Homo sapiens 32 Met Thr Gln Arg Ser Ile Ala Gly Pro Ile Cys Asn Leu Lys Phe 1 5 10 15 Val Thr Leu Leu Val Ala Leu Ser Ser Glu Leu Pro Phe Leu Gly 20 25 30 Ala Gly Val Gln Leu Gln Asp Asn Gly Tyr Asn Gly Leu Leu Ile 35 40 45 Ala Ile Asn Pro Gln Val Pro Glu Asn Gln Asn Leu Ile Ser Asn 50 55 60 Ile Lys Glu Met Ile Thr Glu Ala Ser Phe Tyr Leu Phe Asn Ala 65 70 75 Thr Lys Arg Arg Val Phe Phe Arg Asn Ile Lys Ile Leu Ile Pro 80 85 90 Ala Thr Trp Lys Ala Asn Asn Asn Ser Lys Ile Lys Gln Glu Ser 95 100 105 Tyr Glu Lys Ala Asn Val Ile Val Thr Asp Trp Tyr Gly Ala His 110 115 120 Gly Asp Asp Pro Tyr Thr Leu Gln Tyr Arg Gly Cys Gly Lys Glu 125 130 135 Gly Lys Tyr Ile His Phe Thr Pro Asn Phe Leu Leu Asn Asp Asn 140 145 150 Leu Thr Ala Gly Tyr Gly Ser Arg Gly Arg Val Phe Val His Glu 155 160 165 Trp Ala His Leu Arg Trp Gly Val Phe Asp Glu Tyr Asn Asn Asp 170 175 180 Lys Pro Phe Tyr Ile Asn Gly Gln Asn Gln Ile Lys Val Thr Arg 185 190 195 Cys Ser Ser Asp Ile Thr Gly Ile Phe Val Cys Glu Lys Gly Pro 200 205 210 Cys Pro Gln Glu Asn Cys Ile Ile Ser Lys Leu Phe Lys Glu Gly 215 220 225 Cys Thr Phe Ile Tyr Asn Ser Thr Gln Asn Ala Thr Ala Ser Ile 230 235 240 Met Phe Met Gln Ser Leu Ser Ser Val Val Glu Phe Cys Asn Ala 245 250 255 Ser Thr His Asn Gln Glu Ala Pro Asn Leu Gln Asn Gln Met Cys 260 265 270 Ser Leu Arg Ser Ala Trp Asp Val Ile Thr Asp Ser Ala Asp Phe 275 280 285 His His Ser Phe Pro Met Asn Gly Thr Glu Leu Pro Pro Pro Pro 290 295 300 Thr Phe Ser Leu Val Gln Ala Gly Asp Lys Val Val Cys Leu Val 305 310 315 Leu Asp Val Ser Ser Lys Met Ala Glu Ala Asp Arg Leu Leu Gln 320 325 330 Leu Gln Gln Ala Ala Glu Phe Tyr Leu Met Gln Ile Val Glu Ile 335 340 345 His Thr Phe Val Gly Ile Ala Ser Phe Asp Ser Lys Gly Glu Ile 350 355 360 Arg Ala Gln Leu His Gln Ile Asn Ser Asn Asp Asp Arg Lys Leu 365 370 375 Leu Val Ser Tyr Leu Pro Thr Thr Val Ser Ala Lys Thr Asp Ile 380 385 390 Ser Ile Cys Ser Gly Leu Lys Lys Gly Phe Glu Val Val Glu Lys 395 400 405 Leu Asn Gly Lys Ala Tyr Gly Ser Val Met Ile Leu Val Thr Ser 410 415 420 Gly Asp Asp Lys Leu Leu Gly Asn Cys Leu Pro Thr Val Leu Ser 425 430 435 Ser Gly Ser Thr Ile His Ser Ile Ala Leu Gly Ser Ser Ala Ala 440 445 450 Pro Asn Leu Glu Glu Leu Ser Arg Leu Thr Gly Gly Leu Lys Phe 455 460 465 Phe Val Pro Asp Ile Ser Asn Ser Asn Ser Met Ile Asp Ala Phe 470 475 480 Ser Arg Ile Ser Ser Gly Thr Gly Asp Ile Phe Gln Gln His Ile 485 490 495 Gln Leu Glu Ser Thr Gly Glu Asn Val Lys Pro His His Gln Leu 500 505 510 Lys Asn Thr Val Thr Val Asp Asn Thr Val Gly Asn Asp Ile Met 515 520 525 Phe Leu Val Thr Trp Gln Ala Ser Gly Pro Pro Glu Ile Ile Leu 530 535 540 Phe Asp Pro Asp Gly Arg Lys Tyr Tyr Thr Asn Asn Phe Thr Thr 545 550 555 Asn Leu Thr Phe Arg Thr Ala Ser Leu Trp Ile Pro Gly Thr Ala 560 565 570 Lys Pro Gly His Trp Thr Tyr Thr Leu Asn Asn Thr His His Ser 575 580 585 Leu Gln Ala Leu Lys Val Thr Val Thr Ser Arg Ala Ser Asn Ser 590 595 600 Ala Val Pro Pro Ala Thr Val Glu Ala Phe Val Glu Arg Asp Ser 605 610 615 Leu His Phe Pro His Pro Val Met Ile Tyr Ala Asn Val Lys Gln 620 625 630 Gly Phe Tyr Pro Ile Ile Asn Ala Thr Val Thr Ala Thr Val Glu 635 640 645 Pro Glu Thr Gly Asp Pro Val Thr Leu Arg Leu Leu Asp Asp Gly 650 655 660 Ala Gly Ala Asp Val Ile Lys Asn Asp Gly Ile Tyr Ser Arg Tyr 665 670 675 Phe Phe Ser Phe Ala Ala Asn Gly Arg Tyr Ser Leu Lys Val His 680 685 690 Val Asn His Ser Pro Ser Ile Ser Thr Pro Ala His Ser Ile Pro 695 700 705 Gly Ser His Ala Met Tyr Val Pro Gly Tyr Thr Ala Asn Gly Asn 710 715 720 Ile Gln Met Asn Ala Pro Arg Lys Ser Val Gly Arg Asn Glu Glu 725 730 735 Glu Arg Lys Trp Gly Phe Ser Arg Val Ser Ser Gly Gly Ser Phe 740 745 750 Ser Val Leu Gly Val Pro Ala Gly Pro His Pro Asp Val Phe Pro 755 760 765 Pro Cys Lys Ile Ile Asp Leu Glu Ala Val Lys Val Glu Glu Glu 770 775 780 Leu Thr Leu Ser Trp Thr Ala Pro Gly Glu Asp Phe Asp Gln Gly 785 790 795 Gln Ala Thr Ser Tyr Glu Ile Arg Met Ser Lys Ser Leu Gln Asn 800 805 810 Ile Gln Asp Asp Phe Asn Asn Ala Ile Leu Val Asn Thr Ser Lys 815 820 825 Arg Asn Pro Gln Gln Ala Gly Ile Arg Glu Ile Phe Thr Phe Ser 830 835 840 Pro Gln Ile Ser Thr Asn Gly Pro Glu His Gln Pro Asn Gly Glu 845 850 855 Thr His Glu Ser His Arg Ile Tyr Val Ala Ile Arg Ala Met Asp 860 865 870 Arg Asn Ser Leu Gln Ser Ala Val Ser Asn Ile Ala Gln Ala Pro 875 880 885 Leu Phe Ile Pro Pro Asn Ser Asp Pro Val Pro Ala Arg Asp Tyr 890 895 900 Leu Ile Leu Lys Gly Val Leu Thr Ala Met Gly Leu Ile Gly Ile 905 910 915 Ile Cys Leu Ile Ile Val Val Thr His His Thr Leu Ser Arg Lys 920 925 930 Lys Arg Ala Asp Lys Lys Glu Asn Gly Thr Lys Leu Leu 935 940 943 33 3022 DNA Mus musculus 33 actggagcag tgcgacc atg gtg cca ggg ctg cag gtc ctt ctg ttc 47 ctc acc ctg cat ctc ctg cag aac aca gag agc tcc atg gtg cat 92 ctc aac agc aat gga tac gag ggt gtg gtc att gcc att aac ccc 137 agt gtg cca gag gac gaa agg ctc atc cca agc ata aag gaa atg 182 gta act caa gct tct acc tac ctg ttt gaa gcc agc caa gga aga 227 gtt tat ttc agg aac ata agc ata tta gtc ccg atg acc tgg aag 272 tcg aaa tct gag tac tta atg cca aaa cga gaa tcg tac gac aaa 317 gca gac gtc ata gtt gcg gat cct cac ctg caa cat gga gac gac 362 ccc tac acc ctt cag tat gga cag tgt ggg gac aga gga cag tac 407 ata cac ttc act cca aac ttc cta ctc act gat aac ttg cgt atc 452 tat gga ccc cga ggc aga gtc ttt gtc cat gag tgg gcc cat ctc 497 cgg tgg gga gta ttt gat gag tat aac gtg gac cgg tca ctt tac 542 att tct aga aag aac act ata gaa gca aca agg tgc tcc gcc agc 587 atc aca ggc aag aag gtg gtc cac gag tgt cag aga ggc agc tgt 632 gtg aca agg gcg tgc cgg cgt gac tcg aag aca cgg ctg tat gaa 677 ccc aaa tgt aca ttt atc cca gac aaa ata cag aca gct ggg gcc 722 tcc ata atg ttc atg caa aac ctc aat tct gtg gtt gaa ttt tgc 767 aca gaa aat aac cac aat gca gaa gcc cca aac cta caa aac aaa 812 atg tgc aat cgc aga agc acg tgg gat gta atc aag acg tct gct 857 gac ttt cag aat gcc cct ccc atg aga gga aca gaa gcc cct cct 902 cca cct aca ttt tat ctg ctc aag tcc aga agg cga gtg gtg tgc 947 ttg gtg ctg gat aaa tct gga agc atg gac aaa gaa gac cgt ctt 992 att cga atg aat caa gca gca gaa ctg tac tta act caa att gtg 1037 gaa aag gag tct atg gtt gga tta gtc aca ttt gac agc gct gcc 1082 cac atc caa aat tat cta ata aaa ata acg agt agt agt gac tac 1127 caa aag atc acc gca aac ctc ccc caa cag gct tct ggt gga act 1172 tca att tgc cat gga ctc cag gca gga ttt cag gca att acc tcc 1217 agt gac cag agc act tcc ggt tct gag atc gta ttg ctg aca gat 1262 ggg gaa gat aat gga ata cgt tcc tgc ttt gag gcc gtc tct cgc 1307 agc ggt gcc atc atc cac acc atc gct ctg ggg cct tcg cgt gcc 1352 cga gaa ctg gag act ctg tcg gac atg aca gga ggg ctt cgt ttc 1397 tat gcc aac aaa gac cta aac agc ctt atc gat gct ttc agt aga 1442 att tca tct aca agt ggc agc gtc tcc cag cag gct ctg cag ttg 1487 gag agc aaa gcc ttc gat gtc aga gca ggg gca tgg ata aac ggt 1532 aca gta cct ctg gac agt acc gtc ggc aac gac acg ttc ttt gtt 1577 atc acc tgg atg gta aaa aag cca gaa atc att ctt caa gat cca 1622 aaa gga aaa aaa tat aca acc tca gat ttc caa gat gat aaa cta 1667 aac atc cgg tct gct aga ctt caa ata ccg ggc act gca gag aca 1712 ggt act tgg act tac agc tac acg ggt acc aag tct cag ttg att 1757 aca atg aca gtg acc act cga gca aga agt ccc acc atg gaa cca 1802 ctc ctg ggc tac tgc tac atg agt cag agc aca gcc cag tac cct 1847 agc cgg atg att gtg tac gca cgg gtc agc caa gga ttt ttg cct 1892 gtt ctg gga gcc aat gtc aca gcc ctc ata gaa gct gaa cat gga 1937 cat caa gtc acc ttg gag ctc tgg gac aat ggg gca ggt gct gat 1982 atc gtt aaa aat gat ggc atc tac aca aga tac ttt aca gat tat 2027 cat gga aat ggt aga tac agc cta aaa gtg cgt gtc cag gca caa 2072 aga aac aaa acc aga ctg agc tta aga cag aag aac aag tct tta 2117 tat ata cct ggc tat gtg gaa aat ggt aaa att gta ctg aat cca 2162 ccc aga cca gat gtc caa gaa gaa gcc ata gaa gct aca gtg gaa 2207 gac ttc aac aga gta acc tct gga ggg tcg ttt act gtg tct gga 2252 gcg ccc cct gat ggc gac cac gct cgt gtg ttc cca cca agt aaa 2297 gtc aca gac ctg gag gct gag ttt ata ggt gat tat att cac ctt 2342 aca tgg acg gcc cct ggc aag gtt ctc gac aat gga aga gca cat 2387 aga tac atc atc aga atg agc cag cat cct ctg gat ctc caa gaa 2432 gat ttt aac aat gct act tta gtg aat gct tcc agt ctg ata cct 2477 aaa gaa gct ggc tca aaa gaa gca ttt aaa ttc aaa cca gaa act 2522 ttt aaa ata gca aat ggc atc cag ctc tac att gca atc cag gca 2567 gac aat gaa gcc agt ctc acc tct gag gtc tcc aac atc gca cag 2612 gct gtc aag ctt act tct cta gaa gat agt atc tct gca ctg ggt 2657 gat gat att tct gca atc tct atg aca att tgg ggg tta act gtg 2702 att ttt aac tct att tta aac tagaagatag aatggcacta 2743 aaatgcaatc ctgtacatat ttgctaagtg ttgctttaga atgtctttac 2793 tacacactca aaggctgcct gtcaacaatt gtaatataga agttcatatt 2843 caaagttgaa aatcccgagt tactaacaca attcttttgc tatatgtaga 2893 tcaagattaa cagttcctca ttcaatttct taattgttcc atttactatg 2943 gaaataagat atccattctc ttttcacagt gtgatgcaag ttcactttgt 2993 atatgaaaat aaaaaatttg tacaactcg 3022 34 902 PRT Mus musculus 34 Met Val Pro Gly Leu Gln Val Leu Leu Phe Leu Thr Leu His Leu 5 10 15 Leu Gln Asn Thr Glu Ser Ser Met Val His Leu Asn Ser Asn Gly 20 25 30 Tyr Glu Gly Val Val Ile Ala Ile Asn Pro Ser Val Pro Glu Asp 35 40 45 Glu Arg Leu Ile Pro Ser Ile Lys Glu Met Val Thr Gln Ala Ser 50 55 60 Thr Tyr Leu Phe Glu Ala Ser Gln Gly Arg Val Tyr Phe Arg Asn 65 70 75 Ile Ser Ile Leu Val Pro Met Thr Trp Lys Ser Lys Ser Glu Tyr 80 85 90 Leu Met Pro Lys Arg Glu Ser Tyr Asp Lys Ala Asp Val Ile Val 95 100 105 Ala Asp Pro His Leu Gln His Gly Asp Asp Pro Tyr Thr Leu Gln 110 115 120 Tyr Gly Gln Cys Gly Asp Arg Gly Gln Tyr Ile His Phe Thr Pro 125 130 135 Asn Phe Leu Leu Thr Asp Asn Leu Arg Ile Tyr Gly Pro Arg Gly 140 145 150 Arg Val Phe Val His Glu Trp Ala His Leu Arg Trp Gly Val Phe 155 160 165 Asp Glu Tyr Asn Val Asp Arg Ser Pro Tyr Ile Ser Arg Lys Asn 170 175 180 Thr Ile Glu Ala Thr Arg Cys Ser Ala Ser Ile Thr Gly Lys Lys 185 190 195 Val Val His Glu Cys Gln Arg Gly Ser Cys Val Thr Arg Ala Cys 200 205 210 Arg Arg Asp Ser Lys Thr Arg Leu Tyr Glu Pro Lys Cys Thr Phe 215 220 225 Ile Pro Asp Lys Ile Gln Thr Ala Gly Ala Ser Ile Met Phe Met 230 235 240 Gln Asn Leu Asn Ser Val Val Glu Phe Cys Thr Glu Asn Asn His 245 250 255 Asn Ala Glu Ala Pro Asn Leu Gln Asn Lys Met Cys Asn Arg Arg 260 265 270 Ser Thr Trp Asp Val Ile Lys Thr Ser Ala Asp Phe Gln Asn Ala 275 280 285 Pro Pro Met Arg Gly Thr Glu Ala Pro Pro Pro Pro Thr Phe Tyr 290 295 300 Leu Leu Lys Ser Arg Arg Arg Val Val Cys Leu Val Leu Asp Lys 305 310 315 Ser Gly Ser Met Asp Lys Glu Asp Arg Leu Ile Arg Met Asn Gln 320 325 330 Ala Ala Glu Leu Tyr Leu Thr Gln Ile Val Glu Lys Glu Ser Met 335 340 345 Val Gly Leu Val Thr Phe Asp Ser Ala Ala His Ile Gln Asn Tyr 350 355 360 Leu Ile Lys Ile Thr Ser Ser Ser Asp Tyr Gln Lys Ile Thr Ala 365 370 375 Asn Leu Pro Gln Gln Ala Ser Gly Gly Thr Ser Ile Cys His Gly 380 385 390 Leu Gln Ala Gly Phe Gln Ala Ile Thr Ser Ser Asp Gln Ser Thr 395 400 405 Ser Gly Ser Glu Ile Val Leu Leu Thr Asp Gly Glu Asp Asn Gly 410 415 420 Ile Arg Ser Cys Phe Glu Ala Val Ser Arg Ser Gly Ala Ile Ile 425 430 435 His Thr Ile Ala Leu Gly Pro Ser Arg Ala Arg Glu Leu Glu Thr 440 445 450 Leu Ser Asp Met Thr Gly Gly Leu Arg Phe Tyr Ala Asn Lys Asp 455 460 465 Leu Asn Ser Leu Ile Asp Ala Phe Ser Arg Ile Ser Ser Thr Ser 470 475 480 Gly Ser Val Ser Gln Gln Ala Leu Gln Leu Glu Ser Lys Ala Phe 485 490 495 Asp Val Arg Ala Gly Ala Trp Ile Asn Gly Thr Val Pro Leu Asp 500 505 510 Ser Thr Val Gly Asn Asp Thr Phe Phe Val Ile Thr Trp Met Val 515 520 525 Lys Lys Pro Glu Ile Ile Leu Gln Asp Pro Lys Gly Lys Lys Tyr 530 535 540 Thr Thr Ser Asp Phe Gln Asp Asp Lys Leu Asn Ile Arg Ser Ala 545 550 555 Arg Leu Gln Ile Pro Gly Thr Ala Glu Thr Gly Thr Trp Thr Tyr 560 565 570 Ser Tyr Thr Gly Thr Lys Ser Gln Leu Ile Thr Met Thr Val Thr 575 580 585 Thr Arg Ala Arg Ser Pro Thr Met Glu Pro Leu Leu Gly Tyr Cys 590 595 600 Tyr Met Ser Gln Ser Thr Ala Gln Tyr Pro Ser Arg Met Ile Val 605 610 615 Tyr Ala Arg Val Ser Gln Gly Phe Leu Pro Val Leu Gly Ala Asn 620 625 630 Val Thr Ala Leu Ile Glu Ala Glu His Gly His Gln Val Thr Leu 635 640 645 Glu Leu Trp Asp Asn Gly Ala Gly Ala Asp Ile Val Lys Asn Asp 650 655 660 Gly Ile Tyr Thr Arg Tyr Phe Thr Asp Tyr His Gly Asn Gly Arg 665 670 675 Tyr Ser Leu Lys Val Arg Val Gln Ala Gln Arg Asn Lys Thr Arg 680 685 690 Leu Ser Leu Arg Gln Lys Asn Lys Ser Leu Tyr Ile Pro Gly Tyr 695 700 705 Val Glu Asn Gly Lys Ile Val Leu Asn Pro Pro Arg Pro Asp Val 710 715 720 Gln Glu Glu Ala Ile Glu Ala Thr Val Glu Asp Phe Asn Arg Val 725 730 735 Thr Ser Gly Gly Ser Phe Thr Val Ser Gly Ala Pro Pro Asp Gly 740 745 750 Asp His Ala Arg Val Phe Pro Pro Ser Lys Val Thr Asp Leu Glu 755 760 765 Ala Glu Phe Ile Gly Asp Tyr Ile His Leu Thr Trp Thr Ala Pro 770 775 780 Gly Lys Val Leu Asp Asn Gly Arg Ala His Arg Tyr Ile Ile Arg 785 790 795 Met Ser Gln His Pro Leu Asp Leu Gln Glu Asp Phe Asn Asn Ala 800 805 810 Thr Leu Val Asn Ala Ser Ser Leu Ile Pro Lys Glu Ala Gly Ser 815 820 825 Lys Glu Ala Phe Lys Phe Lys Pro Glu Thr Phe Lys Ile Ala Asn 830 835 840 Gly Ile Gln Leu Tyr Ile Ala Ile Gln Ala Asp Asn Glu Ala Ser 845 850 855 Leu Thr Ser Glu Val Ser Asn Ile Ala Gln Ala Val Lys Leu Thr 860 865 870 Ser Leu Glu Asp Ser Ile Ser Ala Leu Gly Asp Asp Ile Ser Ala 875 880 885 Ile Ser Met Thr Ile Trp Gly Leu Thr Val Ile Phe Asn Ser Ile 890 895 900 Leu Asn 902 35 18 DNA Artificial sequence Amplification primer 35 gaaccttgcc aggggccg 18 36 22 DNA Artificial sequence Amplification primer 36 ccacgtgctt ctgcgattgc ac 22 37 31 DNA Artificial sequence Amplification primer 37 gcggccgcaa tggggccatt taagagttct g 31 38 30 DNA Artificial sequence Amplification primer 38 gcggccgcag ccctaggcta ttgacagctg 30 39 24 DNA Artificial sequence Amplification primer 39 agaatcaaga tgaacacaga actc 24 40 26 DNA Artificial sequence Amplification primer 40 caaggtattt cacaacttat gacacg 26 41 29 DNA Artificial sequence Amplification primer 41 gcggccgcta caacatgacc caaaggagc 29 42 43 DNA Artificial sequence Amplification primer 42 gcggccgcga cactttggat atttatttat aataattttg ttc 43 43 19 DNA Artificial sequence Amplification primer 43 cctttatgtt ttgaatgag 19 44 22 DNA Artificial sequence Amplification primer 44 caactatgac atctgcctgg tc 22 45 25 DNA Artificial sequence Amplification primer 45 cacaaagcta ggctaagtca agaac 25 46 903 PRT Unknown Calcium sensitive chloride channel from bovine tracheal epithelium (Cunningham et al., 1995, J. Biol Chem 46 Met Val Pro Arg Leu Thr Val Ile Leu Phe Leu Thr Leu His Leu 5 10 15 Leu Pro Gly Met Lys Ser Ser Met Val Asn Leu Ile Asn Asn Gly 20 25 30 Tyr Asp Gly Ile Val Ile Ala Ile Asn Pro Ser Val Pro Glu Asp 35 40 45 Glu Lys Leu Ile Gln Asn Ile Lys Glu Met Val Thr Glu Ala Ser 50 55 60 Thr Tyr Leu Phe His Ala Thr Lys Arg Arg Val Tyr Phe Arg Asn 65 70 75 Val Ser Ile Leu Ile Pro Met Thr Trp Lys Ser Lys Ser Glu Tyr 80 85 90 Leu Met Pro Lys Gln Glu Ser Tyr Asp Gln Ala Glu Val Ile Val 95 100 105 Ala Asn Pro Tyr Leu Lys His Gly Asp Asp Pro Tyr Thr Leu Gln 110 115 120 Tyr Gly Arg Cys Gly Glu Lys Gly Gln Tyr Ile His Phe Thr Pro 125 130 135 Asn Phe Leu Leu Thr Asn Asn Leu Pro Ile Tyr Gly Ser Arg Gly 140 145 150 Arg Ala Phe Val His Glu Trp Ala His Leu Arg Trp Gly Ile Phe 155 160 165 Asp Glu Tyr Asn Gly Asp Gln Pro Phe Tyr Ile Ser Arg Arg Asn 170 175 180 Thr Ile Glu Ala Thr Arg Cys Ser Thr His Ile Thr Gly Thr Asn 185 190 195 Val Ile Val Lys Cys Gln Gly Gly Ser Cys Ile Thr Arg Pro Cys 200 205 210 Arg Arg Asp Ser Gln Thr Gly Leu Tyr Glu Ala Lys Cys Thr Phe 215 220 225 Ile Pro Glu Lys Ser Gln Thr Ala Arg Glu Ser Ile Met Phe Met 230 235 240 Gln Ser Leu His Ser Val Thr Glu Phe Cys Thr Glu Lys Thr His 245 250 255 Asn Val Glu Ala Pro Asn Leu Gln Asn Lys Met Cys Asn Gly Lys 260 265 270 Ser Thr Trp Asp Val Ile Met Asn Ser Thr Asp Phe Gln Asn Thr 275 280 285 Ser Pro Met Thr Glu Met Asn Pro Pro Thr Gln Pro Thr Phe Ser 290 295 300 Leu Leu Lys Ser Lys Gln Arg Val Val Cys Leu Val Leu Asp Lys 305 310 315 Ser Gly Ser Met Ser Ser Glu Asp Arg Leu Phe Arg Met Asn Gln 320 325 330 Ala Ala Glu Leu Phe Leu Ile Gln Ile Ile Glu Lys Gly Ser Leu 335 340 345 Val Gly Met Val Thr Phe Asp Ser Val Ala Glu Ile Arg Asn Asn 350 355 360 Leu Thr Lys Ile Thr Asp Asp Asn Val Tyr Glu Asn Ile Thr Ala 365 370 375 Asn Leu Pro Gln Glu Ala Asn Gly Gly Thr Ser Ile Cys Arg Gly 380 385 390 Leu Lys Ala Gly Phe Gln Ala Ile Ile Gln Ser Gln Gln Ser Thr 395 400 405 Ser Gly Ser Glu Ile Ile Leu Leu Thr Asp Gly Glu Asp Asn Glu 410 415 420 Ile His Ser Cys Ile Glu Glu Val Lys Gln Ser Gly Val Ile Ile 425 430 435 His Thr Val Ala Leu Gly Pro Ser Ala Ala Lys Glu Leu Glu Thr 440 445 450 Leu Ser Asp Met Thr Gly Gly His Arg Phe Tyr Ala Asn Lys Asp 455 460 465 Ile Asn Gly Leu Thr Asn Ala Phe Ser Arg Ile Ser Ser Arg Ser 470 475 480 Gly Ser Ile Thr Gln Gln Thr Ile Gln Leu Glu Ser Lys Ala Leu 485 490 495 Ala Ile Thr Glu Lys Lys Trp Val Asn Gly Thr Val Pro Val Asp 500 505 510 Ser Thr Ile Gly Asn Asp Thr Phe Phe Val Val Thr Trp Thr Ile 515 520 525 Lys Lys Pro Glu Ile Leu Leu Gln Asp Pro Lys Gly Lys Lys Tyr 530 535 540 Lys Thr Ser Asp Phe Lys Glu Asp Lys Leu Asn Ile His Ser Ala 545 550 555 Arg Leu Arg Ile Pro Gly Ile Ala Glu Thr Gly Thr Trp Thr Tyr 560 565 570 Ser Leu Leu Asn Asn His Ala Ser Pro Gln Ile Leu Thr Val Thr 575 580 585 Val Thr Thr Arg Ala Arg Ser Pro Thr Thr Pro Pro Val Thr Ala 590 595 600 Thr Ala His Met Asn Gln Asn Thr Ala His Tyr Pro Ser Pro Val 605 610 615 Ile Val Tyr Ala Gln Val Ser Gln Gly Phe Leu Pro Val Leu Gly 620 625 630 Ile Asn Val Thr Ala Ile Ile Glu Thr Glu Asp Gly His Gln Val 635 640 645 Thr Leu Glu Leu Trp Asp Asn Gly Ala Gly Ala Asp Ala Thr Lys 650 655 660 Asp Asp Gly Val Tyr Ser Arg Tyr Phe Thr Thr Tyr Asp Thr Asn 665 670 675 Gly Arg Tyr Ser Val Lys Val His Ala Glu Ala Arg Asn Asn Thr 680 685 690 Ala Arg Leu Ser Leu Arg Gln Pro Gln Asn Lys Ala Leu Tyr Ile 695 700 705 Pro Gly Tyr Ile Glu Asn Gly Lys Ile Ile Leu Asn Pro Pro Arg 710 715 720 Pro Glu Val Lys Asp Asp Leu Ala Lys Ala Glu Ile Glu Asp Phe 725 730 735 Ser Arg Leu Thr Ser Gly Gly Ser Phe Thr Val Ser Gly Ala Pro 740 745 750 Pro Gly Asn His Pro Ser Val Leu Pro Pro Asn Lys Ile Thr Asp 755 760 765 Leu Glu Ala Lys Phe Lys Glu Asp His Ile Gln Leu Ser Trp Thr 770 775 780 Ala Pro Ala Asn Val Leu Asp Lys Gly Lys Ala Asn Ser Tyr Ile 785 790 795 Ile Arg Ile Ser Lys Ser Phe Leu Asp Leu Gln Lys Asp Phe Asp 800 805 810 Asn Ala Thr Leu Val Asn Thr Ser Ser Leu Lys Pro Lys Glu Ala 815 820 825 Gly Ser Asp Glu Asn Phe Glu Phe Lys Pro Glu Pro Phe Arg Ile 830 835 840 Glu Asn Gly Thr Asn Phe Tyr Ile Ala Val Gln Ala Ile Asn Glu 845 850 855 Ala Asn Leu Thr Ser Glu Val Ser Asn Ile Ala Gln Ala Ile Lys 860 865 870 Phe Ile Pro Met Pro Glu Asp Ser Val Pro Ala Leu Gly Thr Lys 875 880 885 Ile Ser Ala Ile Asn Leu Ala Ile Phe Ala Leu Ala Met Ile Leu 890 895 900 Ser Ile Val 903 47 10 PRT Homo sapiens partial sequence of human c-myc protein 47 Glu Gln Lys Leu Ile Ser Glu Glu Asp Leu 1 5 10 

We claim:
 1. An isolated nucleic acid molecule comprising a nucleotide sequence encoding at least one mammalian protein selected from the group consisting of a Lu-ECAM-1 precursor, Lu-ECAM-1, Lu-ECAM-1 associated protein, and a combination thereof; wherein the at least one mammalian protein has an amino acid sequence selected from the group consisting of SEQ ID NO:2, SEQ ID NO:3, SEQ ID NO:11, SEQ ID NO:12, SEQ ID NO:13, SEQ ID NO:28, SEQ ID NO:30, SEQ ID NO:32, and SEQ ID NO:34.
 2. An isolated nucleic acid molecule comprising a nucleotide sequence encoding a calcium activated chloride conductance channel wherein the nucleotide sequence is selected from the group consisting of SEQ ID NO:1, SEQ ID NO:27, SEQ ID NO:29, SEQ ID NO:31, SEQ ID NO:33, degeneracy substitutions thereof and conservative substitutions thereof.
 3. The isolated nucleic acid molecule of claim 2 wherein the nucleotide sequence is SEQ ID NO:
 1. 4. The isolated nucleic acid molecule of claim 2 where in the nucleotide sequence is SEQ ID NO:
 27. 5. The isolated nucleic acid molecule of claim 2 wherein the nucleotide sequence is SEQ ID NO:
 29. 6. The isolated nucleic acid molecule of claim 2 wherein the nucleotide sequence is SEQ ID NO:
 31. 7. The isolated nucleic acid molecule of claim 2 wherein the cunceltide sequence is SEQ ID NO:
 33. 8. A vector comprising the nucleic acid molecule of claim
 1. 9. A recombinant vector containing the nucleic acid molecule according to claim 1, wherein the nucleic acid molecule is operatively linked to one or more control elements.
 10. A host cell containing the vector of claim
 9. 11. A method of providing calcium activated chloride channel activity to a mammalian cell comprising transfecting the mammalian cell with the vector of claim
 9. 12. A polypeptide consisting of the amino acid sequence selected from the group consisting of SEQ ID NO:2, SEQ ID NO:3, SEQ ID NO:28, SEQ ID:30, SEQ ID NO:32, SEQ ID NO:34, and conservative substitutions thereof. 